Finding the Fourth Proportional to 8,139.65, 12,209.31 and 2,593.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139.65 : 12,209.31 = 2,593.38 : x
2. Step 2: Convert to fraction form
   8,139.65/12,209.31 = 2,593.38/x
3. Step 3: Cross multiply
   8,139.65x = 12,209.31 × 2,593.38
4. Step 4: Simplify right side
   8,139.65x = 31,663,380.37
5. Step 5: Solve for x
   x = 31,663,380.37/8,139.65
6. Step 6: Final answer
   x = 3,890.02