Finding the Fourth Proportional to 10,399.50, 14,351.04 and 6,150.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,399.50 : 14,351.04 = 6,150.78 : x
2. Step 2: Convert to fraction form
   10,399.50/14,351.04 = 6,150.78/x
3. Step 3: Cross multiply
   10,399.50x = 14,351.04 × 6,150.78
4. Step 4: Simplify right side
   10,399.50x = 88,270,089.81
5. Step 5: Solve for x
   x = 88,270,089.81/10,399.50
6. Step 6: Final answer
   x = 8,487.92