Finding the Fourth Proportional to 3,984.32, 5,498.06 and 2,215.68

Step by Step Solution

1. Step 1: Write the proportion equation
   3,984.32 : 5,498.06 = 2,215.68 : x
2. Step 2: Convert to fraction form
   3,984.32/5,498.06 = 2,215.68/x
3. Step 3: Cross multiply
   3,984.32x = 5,498.06 × 2,215.68
4. Step 4: Simplify right side
   3,984.32x = 12,181,930.50
5. Step 5: Solve for x
   x = 12,181,930.50/3,984.32
6. Step 6: Final answer
   x = 3,057.47