Finding the Fourth Proportional to 11,086.72, 15,294.77 and 7,500.40

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.72 : 15,294.77 = 7,500.40 : x
2. Step 2: Convert to fraction form
   11,086.72/15,294.77 = 7,500.40/x
3. Step 3: Cross multiply
   11,086.72x = 15,294.77 × 7,500.40
4. Step 4: Simplify right side
   11,086.72x = 114,716,892.91
5. Step 5: Solve for x
   x = 114,716,892.91/11,086.72
6. Step 6: Final answer
   x = 10,347.23