Finding the Fourth Proportional to 9,129.31, 12,598.52 and 5,352.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,129.31 : 12,598.52 = 5,352.57 : x
2. Step 2: Convert to fraction form
   9,129.31/12,598.52 = 5,352.57/x
3. Step 3: Cross multiply
   9,129.31x = 12,598.52 × 5,352.57
4. Step 4: Simplify right side
   9,129.31x = 67,434,433.43
5. Step 5: Solve for x
   x = 67,434,433.43/9,129.31
6. Step 6: Final answer
   x = 7,386.59