Finding the Fourth Proportional to 3,985.81, 5,500.27 and 2,217.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,985.81 : 5,500.27 = 2,217.53 : x
2. Step 2: Convert to fraction form
   3,985.81/5,500.27 = 2,217.53/x
3. Step 3: Cross multiply
   3,985.81x = 5,500.27 × 2,217.53
4. Step 4: Simplify right side
   3,985.81x = 12,196,980.69
5. Step 5: Solve for x
   x = 12,196,980.69/3,985.81
6. Step 6: Final answer
   x = 3,060.10