Finding the Fourth Proportional to 8,863.43, 12,231.54 and 5,086.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,863.43 : 12,231.54 = 5,086.71 : x
2. Step 2: Convert to fraction form
   8,863.43/12,231.54 = 5,086.71/x
3. Step 3: Cross multiply
   8,863.43x = 12,231.54 × 5,086.71
4. Step 4: Simplify right side
   8,863.43x = 62,218,296.83
5. Step 5: Solve for x
   x = 62,218,296.83/8,863.43
6. Step 6: Final answer
   x = 7,019.67