Finding the Fourth Proportional to 8,983.43, 12,398.72 and 5,629.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,983.43 : 12,398.72 = 5,629.12 : x
2. Step 2: Convert to fraction form
   8,983.43/12,398.72 = 5,629.12/x
3. Step 3: Cross multiply
   8,983.43x = 12,398.72 × 5,629.12
4. Step 4: Simplify right side
   8,983.43x = 69,793,882.73
5. Step 5: Solve for x
   x = 69,793,882.73/8,983.43
6. Step 6: Final answer
   x = 7,769.18