Finding the Fourth Proportional to 3,997.72, 5,517.30 and 2,229.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.72 : 5,517.30 = 2,229.58 : x
2. Step 2: Convert to fraction form
   3,997.72/5,517.30 = 2,229.58/x
3. Step 3: Cross multiply
   3,997.72x = 5,517.30 × 2,229.58
4. Step 4: Simplify right side
   3,997.72x = 12,301,261.73
5. Step 5: Solve for x
   x = 12,301,261.73/3,997.72
6. Step 6: Final answer
   x = 3,077.07