Finding the Fourth Proportional to 11,686.42, 16,132.93 and 7,501.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,686.42 : 16,132.93 = 7,501.78 : x
2. Step 2: Convert to fraction form
   11,686.42/16,132.93 = 7,501.78/x
3. Step 3: Cross multiply
   11,686.42x = 16,132.93 × 7,501.78
4. Step 4: Simplify right side
   11,686.42x = 121,025,691.62
5. Step 5: Solve for x
   x = 121,025,691.62/11,686.42
6. Step 6: Final answer
   x = 10,356.10