Finding the Fourth Proportional to 10,957.10, 16,434.43 and 4,293.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,957.10 : 16,434.43 = 4,293.50 : x
2. Step 2: Convert to fraction form
   10,957.10/16,434.43 = 4,293.50/x
3. Step 3: Cross multiply
   10,957.10x = 16,434.43 × 4,293.50
4. Step 4: Simplify right side
   10,957.10x = 70,561,132.30
5. Step 5: Solve for x
   x = 70,561,132.30/10,957.10
6. Step 6: Final answer
   x = 6,439.77