Finding the Fourth Proportional to 8,731.18, 12,080.70 and 7,614.43

Step by Step Solution

1. Step 1: Write the proportion equation
   8,731.18 : 12,080.70 = 7,614.43 : x
2. Step 2: Convert to fraction form
   8,731.18/12,080.70 = 7,614.43/x
3. Step 3: Cross multiply
   8,731.18x = 12,080.70 × 7,614.43
4. Step 4: Simplify right side
   8,731.18x = 91,987,584.10
5. Step 5: Solve for x
   x = 91,987,584.10/8,731.18
6. Step 6: Final answer
   x = 10,535.53