Where should the minute hand point on the bottom clock?

Concept: in this clock-sequence puzzle, each clock face shows an hour hand and a minute hand pointing at two of the twelve face numbers. Moving clockwise through the four clocks (top, then right, then bottom, then left), the gap obtained by subtracting the minute hand's number from the hour hand's number increases by exactly 1 at every step: step 1 uses a gap of 3, step 2 uses a gap of 4, step 3 uses a gap of 5, and step 4 uses a gap of 6.

Applying this rule to each clock in turn:

1. Top clock (step 1): hour hand at 7, minute hand at 4, so the gap is 7 minus 4 equals 3.

2. Right clock (step 2): hour hand at 11, minute hand at 7, so the gap is 11 minus 7 equals 4.

3. Bottom clock (step 3, the one in question): the hour hand is shown at 9. Continuing the progression, this step's gap must be 5, so the minute hand must be at 9 minus 5 equals 4.

4. Left clock (step 4): hour hand at 10, minute hand at 4, so the gap is 10 minus 4 equals 6.

Cross-check: the four gaps come out to 3, 4, 5, 6 - an unbroken sequence rising by 1 at each clock, with the left clock (step 4, gap 6) confirming the progression continues correctly past the bottom clock. This consistency across all four clocks confirms the bottom clock's minute hand belongs at 4.

So the minute hand on the bottom clock should point to 4.