Finding the Fourth Proportional to 10,158.68, 14,018.54 and 6,385.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,158.68 : 14,018.54 = 6,385.72 : x
2. Step 2: Convert to fraction form
   10,158.68/14,018.54 = 6,385.72/x
3. Step 3: Cross multiply
   10,158.68x = 14,018.54 × 6,385.72
4. Step 4: Simplify right side
   10,158.68x = 89,518,471.25
5. Step 5: Solve for x
   x = 89,518,471.25/10,158.68
6. Step 6: Final answer
   x = 8,812.02