Finding the Fourth Proportional to 11,158.80, 15,399.89 and 8,134.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,158.80 : 15,399.89 = 8,134.62 : x
2. Step 2: Convert to fraction form
   11,158.80/15,399.89 = 8,134.62/x
3. Step 3: Cross multiply
   11,158.80x = 15,399.89 × 8,134.62
4. Step 4: Simplify right side
   11,158.80x = 125,272,212.52
5. Step 5: Solve for x
   x = 125,272,212.52/11,158.80
6. Step 6: Final answer
   x = 11,226.32