Finding the Fourth Proportional to 9,129.36, 12,598.49 and 5,150.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,129.36 : 12,598.49 = 5,150.39 : x
2. Step 2: Convert to fraction form
   9,129.36/12,598.49 = 5,150.39/x
3. Step 3: Cross multiply
   9,129.36x = 12,598.49 × 5,150.39
4. Step 4: Simplify right side
   9,129.36x = 64,887,057.82
5. Step 5: Solve for x
   x = 64,887,057.82/9,129.36
6. Step 6: Final answer
   x = 7,107.52