Finding the Fourth Proportional to 3,985.77, 5,500.37 and 2,217.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,985.77 : 5,500.37 = 2,217.39 : x
2. Step 2: Convert to fraction form
   3,985.77/5,500.37 = 2,217.39/x
3. Step 3: Cross multiply
   3,985.77x = 5,500.37 × 2,217.39
4. Step 4: Simplify right side
   3,985.77x = 12,196,465.43
5. Step 5: Solve for x
   x = 12,196,465.43/3,985.77
6. Step 6: Final answer
   x = 3,060.00