Finding the Fourth Proportional to 9,039.76, 12,475.08 and 5,061.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,039.76 : 12,475.08 = 5,061.28 : x
2. Step 2: Convert to fraction form
   9,039.76/12,475.08 = 5,061.28/x
3. Step 3: Cross multiply
   9,039.76x = 12,475.08 × 5,061.28
4. Step 4: Simplify right side
   9,039.76x = 63,139,872.90
5. Step 5: Solve for x
   x = 63,139,872.90/9,039.76
6. Step 6: Final answer
   x = 6,984.68