Finding the Fourth Proportional to 9,040.72, 12,476.66 and 5,061.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,040.72 : 12,476.66 = 5,061.60 : x
2. Step 2: Convert to fraction form
   9,040.72/12,476.66 = 5,061.60/x
3. Step 3: Cross multiply
   9,040.72x = 12,476.66 × 5,061.60
4. Step 4: Simplify right side
   9,040.72x = 63,151,862.26
5. Step 5: Solve for x
   x = 63,151,862.26/9,040.72
6. Step 6: Final answer
   x = 6,985.27