Finding the Fourth Proportional to 9,134.19, 12,605.16 and 5,155.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,134.19 : 12,605.16 = 5,155.29 : x
2. Step 2: Convert to fraction form
   9,134.19/12,605.16 = 5,155.29/x
3. Step 3: Cross multiply
   9,134.19x = 12,605.16 × 5,155.29
4. Step 4: Simplify right side
   9,134.19x = 64,983,255.30
5. Step 5: Solve for x
   x = 64,983,255.30/9,134.19
6. Step 6: Final answer
   x = 7,114.29