Finding the Fourth Proportional to 8,039.92, 12,058.78 and 2,116.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,039.92 : 12,058.78 = 2,116.31 : x
2. Step 2: Convert to fraction form
   8,039.92/12,058.78 = 2,116.31/x
3. Step 3: Cross multiply
   8,039.92x = 12,058.78 × 2,116.31
4. Step 4: Simplify right side
   8,039.92x = 25,520,069.50
5. Step 5: Solve for x
   x = 25,520,069.50/8,039.92
6. Step 6: Final answer
   x = 3,174.17