Finding the Fourth Proportional to 3,985.52, 5,500.35 and 2,217.47

Step by Step Solution

1. Step 1: Write the proportion equation
   3,985.52 : 5,500.35 = 2,217.47 : x
2. Step 2: Convert to fraction form
   3,985.52/5,500.35 = 2,217.47/x
3. Step 3: Cross multiply
   3,985.52x = 5,500.35 × 2,217.47
4. Step 4: Simplify right side
   3,985.52x = 12,196,833.61
5. Step 5: Solve for x
   x = 12,196,833.61/3,985.52
6. Step 6: Final answer
   x = 3,060.29