Finding the Fourth Proportional to 10,434.72, 14,399.91 and 5,718.99

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.72 : 14,399.91 = 5,718.99 : x
2. Step 2: Convert to fraction form
   10,434.72/14,399.91 = 5,718.99/x
3. Step 3: Cross multiply
   10,434.72x = 14,399.91 × 5,718.99
4. Step 4: Simplify right side
   10,434.72x = 82,352,941.29
5. Step 5: Solve for x
   x = 82,352,941.29/10,434.72
6. Step 6: Final answer
   x = 7,892.20