Finding the Fourth Proportional to 3,984.45, 5,499.18 and 2,216.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,984.45 : 5,499.18 = 2,216.58 : x
2. Step 2: Convert to fraction form
   3,984.45/5,499.18 = 2,216.58/x
3. Step 3: Cross multiply
   3,984.45x = 5,499.18 × 2,216.58
4. Step 4: Simplify right side
   3,984.45x = 12,189,372.40
5. Step 5: Solve for x
   x = 12,189,372.40/3,984.45
6. Step 6: Final answer
   x = 3,059.24