Finding the Fourth Proportional to 3,984.96, 5,499.04 and 2,216.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,984.96 : 5,499.04 = 2,216.56 : x
2. Step 2: Convert to fraction form
   3,984.96/5,499.04 = 2,216.56/x
3. Step 3: Cross multiply
   3,984.96x = 5,499.04 × 2,216.56
4. Step 4: Simplify right side
   3,984.96x = 12,188,952.10
5. Step 5: Solve for x
   x = 12,188,952.10/3,984.96
6. Step 6: Final answer
   x = 3,058.74