Finding the Fourth Proportional to 3,997.16, 5,514.96 and 2,318.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,997.16 : 5,514.96 = 2,318.23 : x
2. Step 2: Convert to fraction form
   3,997.16/5,514.96 = 2,318.23/x
3. Step 3: Cross multiply
   3,997.16x = 5,514.96 × 2,318.23
4. Step 4: Simplify right side
   3,997.16x = 12,784,945.72
5. Step 5: Solve for x
   x = 12,784,945.72/3,997.16
6. Step 6: Final answer
   x = 3,198.51