Finding the Fourth Proportional to 10,389.46, 14,337.78 and 5,913.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,389.46 : 14,337.78 = 5,913.10 : x
2. Step 2: Convert to fraction form
   10,389.46/14,337.78 = 5,913.10/x
3. Step 3: Cross multiply
   10,389.46x = 14,337.78 × 5,913.10
4. Step 4: Simplify right side
   10,389.46x = 84,780,726.92
5. Step 5: Solve for x
   x = 84,780,726.92/10,389.46
6. Step 6: Final answer
   x = 8,160.26