Finding the Fourth Proportional to 3,997.72, 5,516.94 and 2,229.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.72 : 5,516.94 = 2,229.50 : x
2. Step 2: Convert to fraction form
   3,997.72/5,516.94 = 2,229.50/x
3. Step 3: Cross multiply
   3,997.72x = 5,516.94 × 2,229.50
4. Step 4: Simplify right side
   3,997.72x = 12,300,017.73
5. Step 5: Solve for x
   x = 12,300,017.73/3,997.72
6. Step 6: Final answer
   x = 3,076.76