Finding the Fourth Proportional to 9,134.38, 12,605.61 and 5,155.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,134.38 : 12,605.61 = 5,155.58 : x
2. Step 2: Convert to fraction form
   9,134.38/12,605.61 = 5,155.58/x
3. Step 3: Cross multiply
   9,134.38x = 12,605.61 × 5,155.58
4. Step 4: Simplify right side
   9,134.38x = 64,989,167.78
5. Step 5: Solve for x
   x = 64,989,167.78/9,134.38
6. Step 6: Final answer
   x = 7,114.79