Finding the Fourth Proportional to 7,359.48, 10,147.14 and 6,411.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,359.48 : 10,147.14 = 6,411.78 : x
2. Step 2: Convert to fraction form
   7,359.48/10,147.14 = 6,411.78/x
3. Step 3: Cross multiply
   7,359.48x = 10,147.14 × 6,411.78
4. Step 4: Simplify right side
   7,359.48x = 65,061,229.31
5. Step 5: Solve for x
   x = 65,061,229.31/7,359.48
6. Step 6: Final answer
   x = 8,840.47