Finding the Fourth Proportional to 10,443.20, 14,411.20 and 5,727.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,443.20 : 14,411.20 = 5,727.20 : x
2. Step 2: Convert to fraction form
   10,443.20/14,411.20 = 5,727.20/x
3. Step 3: Cross multiply
   10,443.20x = 14,411.20 × 5,727.20
4. Step 4: Simplify right side
   10,443.20x = 82,535,824.64
5. Step 5: Solve for x
   x = 82,535,824.64/10,443.20
6. Step 6: Final answer
   x = 7,903.31