Finding the Fourth Proportional to 10,434.71, 14,400.15 and 5,719.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.71 : 14,400.15 = 5,719.25 : x
2. Step 2: Convert to fraction form
   10,434.71/14,400.15 = 5,719.25/x
3. Step 3: Cross multiply
   10,434.71x = 14,400.15 × 5,719.25
4. Step 4: Simplify right side
   10,434.71x = 82,358,057.89
5. Step 5: Solve for x
   x = 82,358,057.89/10,434.71
6. Step 6: Final answer
   x = 7,892.70