Finding the Fourth Proportional to 3,985.38, 5,499.71 and 2,217.04

Step by Step Solution

1. Step 1: Write the proportion equation
   3,985.38 : 5,499.71 = 2,217.04 : x
2. Step 2: Convert to fraction form
   3,985.38/5,499.71 = 2,217.04/x
3. Step 3: Cross multiply
   3,985.38x = 5,499.71 × 2,217.04
4. Step 4: Simplify right side
   3,985.38x = 12,193,065.97
5. Step 5: Solve for x
   x = 12,193,065.97/3,985.38
6. Step 6: Final answer
   x = 3,059.45