Finding the Fourth Proportional to 3,986.17, 5,501.15 and 2,217.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,986.17 : 5,501.15 = 2,217.73 : x
2. Step 2: Convert to fraction form
   3,986.17/5,501.15 = 2,217.73/x
3. Step 3: Cross multiply
   3,986.17x = 5,501.15 × 2,217.73
4. Step 4: Simplify right side
   3,986.17x = 12,200,065.39
5. Step 5: Solve for x
   x = 12,200,065.39/3,986.17
6. Step 6: Final answer
   x = 3,060.60