Finding the Fourth Proportional to 3,997.61, 5,516.73 and 2,229.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.61 : 5,516.73 = 2,229.33 : x
2. Step 2: Convert to fraction form
   3,997.61/5,516.73 = 2,229.33/x
3. Step 3: Cross multiply
   3,997.61x = 5,516.73 × 2,229.33
4. Step 4: Simplify right side
   3,997.61x = 12,298,572.96
5. Step 5: Solve for x
   x = 12,298,572.96/3,997.61
6. Step 6: Final answer
   x = 3,076.48