Finding the Fourth Proportional to 9,108.02, 12,569.01 and 5,129.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,108.02 : 12,569.01 = 5,129.16 : x
2. Step 2: Convert to fraction form
   9,108.02/12,569.01 = 5,129.16/x
3. Step 3: Cross multiply
   9,108.02x = 12,569.01 × 5,129.16
4. Step 4: Simplify right side
   9,108.02x = 64,468,463.33
5. Step 5: Solve for x
   x = 64,468,463.33/9,108.02
6. Step 6: Final answer
   x = 7,078.21