Finding the Fourth Proportional to 3,985.67, 5,500.34 and 2,217.41

Step by Step Solution

1. Step 1: Write the proportion equation
   3,985.67 : 5,500.34 = 2,217.41 : x
2. Step 2: Convert to fraction form
   3,985.67/5,500.34 = 2,217.41/x
3. Step 3: Cross multiply
   3,985.67x = 5,500.34 × 2,217.41
4. Step 4: Simplify right side
   3,985.67x = 12,196,499.27
5. Step 5: Solve for x
   x = 12,196,499.27/3,985.67
6. Step 6: Final answer
   x = 3,060.09