Finding the Fourth Proportional to 3,998.34, 5,517.72 and 2,229.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,998.34 : 5,517.72 = 2,229.94 : x
2. Step 2: Convert to fraction form
   3,998.34/5,517.72 = 2,229.94/x
3. Step 3: Cross multiply
   3,998.34x = 5,517.72 × 2,229.94
4. Step 4: Simplify right side
   3,998.34x = 12,304,191.43
5. Step 5: Solve for x
   x = 12,304,191.43/3,998.34
6. Step 6: Final answer
   x = 3,077.32