Finding the Fourth Proportional to 10,434.38, 14,399.40 and 5,718.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.38 : 14,399.40 = 5,718.68 : x
2. Step 2: Convert to fraction form
   10,434.38/14,399.40 = 5,718.68/x
3. Step 3: Cross multiply
   10,434.38x = 14,399.40 × 5,718.68
4. Step 4: Simplify right side
   10,434.38x = 82,345,560.79
5. Step 5: Solve for x
   x = 82,345,560.79/10,434.38
6. Step 6: Final answer
   x = 7,891.75