Finding the Fourth Proportional to 9,134.42, 12,605.49 and 5,155.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,134.42 : 12,605.49 = 5,155.52 : x
2. Step 2: Convert to fraction form
   9,134.42/12,605.49 = 5,155.52/x
3. Step 3: Cross multiply
   9,134.42x = 12,605.49 × 5,155.52
4. Step 4: Simplify right side
   9,134.42x = 64,987,792.78
5. Step 5: Solve for x
   x = 64,987,792.78/9,134.42
6. Step 6: Final answer
   x = 7,114.61