Finding the Fourth Proportional to 3,984.84, 5,499.42 and 2,216.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,984.84 : 5,499.42 = 2,216.56 : x
2. Step 2: Convert to fraction form
   3,984.84/5,499.42 = 2,216.56/x
3. Step 3: Cross multiply
   3,984.84x = 5,499.42 × 2,216.56
4. Step 4: Simplify right side
   3,984.84x = 12,189,794.40
5. Step 5: Solve for x
   x = 12,189,794.40/3,984.84
6. Step 6: Final answer
   x = 3,059.04