Finding the Fourth Proportional to 7,282.43, 10,939.20 and 5,215.71

Step by Step Solution

1. Step 1: Write the proportion equation
   7,282.43 : 10,939.20 = 5,215.71 : x
2. Step 2: Convert to fraction form
   7,282.43/10,939.20 = 5,215.71/x
3. Step 3: Cross multiply
   7,282.43x = 10,939.20 × 5,215.71
4. Step 4: Simplify right side
   7,282.43x = 57,055,694.83
5. Step 5: Solve for x
   x = 57,055,694.83/7,282.43
6. Step 6: Final answer
   x = 7,834.71