Finding the Fourth Proportional to 10,434.16, 14,399.40 and 5,718.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.16 : 14,399.40 = 5,718.88 : x
2. Step 2: Convert to fraction form
   10,434.16/14,399.40 = 5,718.88/x
3. Step 3: Cross multiply
   10,434.16x = 14,399.40 × 5,718.88
4. Step 4: Simplify right side
   10,434.16x = 82,348,440.67
5. Step 5: Solve for x
   x = 82,348,440.67/10,434.16
6. Step 6: Final answer
   x = 7,892.20