Finding the Fourth Proportional to 8,472.32, 12,709.42 and 2,925.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,472.32 : 12,709.42 = 2,925.04 : x
2. Step 2: Convert to fraction form
   8,472.32/12,709.42 = 2,925.04/x
3. Step 3: Cross multiply
   8,472.32x = 12,709.42 × 2,925.04
4. Step 4: Simplify right side
   8,472.32x = 37,175,561.88
5. Step 5: Solve for x
   x = 37,175,561.88/8,472.32
6. Step 6: Final answer
   x = 4,387.88