Finding the Fourth Proportional to 7,757.92, 10,702.76 and 5,401.43

Step by Step Solution

1. Step 1: Write the proportion equation
   7,757.92 : 10,702.76 = 5,401.43 : x
2. Step 2: Convert to fraction form
   7,757.92/10,702.76 = 5,401.43/x
3. Step 3: Cross multiply
   7,757.92x = 10,702.76 × 5,401.43
4. Step 4: Simplify right side
   7,757.92x = 57,810,128.43
5. Step 5: Solve for x
   x = 57,810,128.43/7,757.92
6. Step 6: Final answer
   x = 7,451.76