Finding the Fourth Proportional to 10,434.97, 14,400.31 and 5,719.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.97 : 14,400.31 = 5,719.28 : x
2. Step 2: Convert to fraction form
   10,434.97/14,400.31 = 5,719.28/x
3. Step 3: Cross multiply
   10,434.97x = 14,400.31 × 5,719.28
4. Step 4: Simplify right side
   10,434.97x = 82,359,426.68
5. Step 5: Solve for x
   x = 82,359,426.68/10,434.97
6. Step 6: Final answer
   x = 7,892.64