Finding the Fourth Proportional to 10,440.42, 14,407.92 and 5,724.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,440.42 : 14,407.92 = 5,724.69 : x
2. Step 2: Convert to fraction form
   10,440.42/14,407.92 = 5,724.69/x
3. Step 3: Cross multiply
   10,440.42x = 14,407.92 × 5,724.69
4. Step 4: Simplify right side
   10,440.42x = 82,480,875.54
5. Step 5: Solve for x
   x = 82,480,875.54/10,440.42
6. Step 6: Final answer
   x = 7,900.15