Finding the Fourth Proportional to 8,789.31, 13,182.49 and 3,857.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,789.31 : 13,182.49 = 3,857.62 : x
2. Step 2: Convert to fraction form
   8,789.31/13,182.49 = 3,857.62/x
3. Step 3: Cross multiply
   8,789.31x = 13,182.49 × 3,857.62
4. Step 4: Simplify right side
   8,789.31x = 50,853,017.79
5. Step 5: Solve for x
   x = 50,853,017.79/8,789.31
6. Step 6: Final answer
   x = 5,785.78