Finding the Fourth Proportional to 9,040.40, 12,475.77 and 5,061.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,040.40 : 12,475.77 = 5,061.57 : x
2. Step 2: Convert to fraction form
   9,040.40/12,475.77 = 5,061.57/x
3. Step 3: Cross multiply
   9,040.40x = 12,475.77 × 5,061.57
4. Step 4: Simplify right side
   9,040.40x = 63,146,983.16
5. Step 5: Solve for x
   x = 63,146,983.16/9,040.40
6. Step 6: Final answer
   x = 6,984.98