Finding the Fourth Proportional to 3,987.80, 5,500.12 and 2,414.24

Step by Step Solution

1. Step 1: Write the proportion equation
   3,987.80 : 5,500.12 = 2,414.24 : x
2. Step 2: Convert to fraction form
   3,987.80/5,500.12 = 2,414.24/x
3. Step 3: Cross multiply
   3,987.80x = 5,500.12 × 2,414.24
4. Step 4: Simplify right side
   3,987.80x = 13,278,609.71
5. Step 5: Solve for x
   x = 13,278,609.71/3,987.80
6. Step 6: Final answer
   x = 3,329.81