Finding the Fourth Proportional to 9,168.27, 12,649.98 and 5,391.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,168.27 : 12,649.98 = 5,391.12 : x
2. Step 2: Convert to fraction form
   9,168.27/12,649.98 = 5,391.12/x
3. Step 3: Cross multiply
   9,168.27x = 12,649.98 × 5,391.12
4. Step 4: Simplify right side
   9,168.27x = 68,197,560.18
5. Step 5: Solve for x
   x = 68,197,560.18/9,168.27
6. Step 6: Final answer
   x = 7,438.43