Finding the Fourth Proportional to 10,434.32, 14,398.76 and 5,718.64

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.32 : 14,398.76 = 5,718.64 : x
2. Step 2: Convert to fraction form
   10,434.32/14,398.76 = 5,718.64/x
3. Step 3: Cross multiply
   10,434.32x = 14,398.76 × 5,718.64
4. Step 4: Simplify right side
   10,434.32x = 82,341,324.89
5. Step 5: Solve for x
   x = 82,341,324.89/10,434.32
6. Step 6: Final answer
   x = 7,891.39