Finding the Fourth Proportional to 10,439.92, 14,407.23 and 5,724.19

Step by Step Solution

1. Step 1: Write the proportion equation
   10,439.92 : 14,407.23 = 5,724.19 : x
2. Step 2: Convert to fraction form
   10,439.92/14,407.23 = 5,724.19/x
3. Step 3: Cross multiply
   10,439.92x = 14,407.23 × 5,724.19
4. Step 4: Simplify right side
   10,439.92x = 82,469,721.89
5. Step 5: Solve for x
   x = 82,469,721.89/10,439.92
6. Step 6: Final answer
   x = 7,899.46