Finding the Fourth Proportional to 3,986.56, 5,500.43 and 2,217.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.56 : 5,500.43 = 2,217.83 : x
2. Step 2: Convert to fraction form
   3,986.56/5,500.43 = 2,217.83/x
3. Step 3: Cross multiply
   3,986.56x = 5,500.43 × 2,217.83
4. Step 4: Simplify right side
   3,986.56x = 12,198,980.08
5. Step 5: Solve for x
   x = 12,198,980.08/3,986.56
6. Step 6: Final answer
   x = 3,060.03