Finding the Fourth Proportional to 3,665.72, 5,058.24 and 2,340.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.72 : 5,058.24 = 2,340.20 : x
2. Step 2: Convert to fraction form
   3,665.72/5,058.24 = 2,340.20/x
3. Step 3: Cross multiply
   3,665.72x = 5,058.24 × 2,340.20
4. Step 4: Simplify right side
   3,665.72x = 11,837,293.25
5. Step 5: Solve for x
   x = 11,837,293.25/3,665.72
6. Step 6: Final answer
   x = 3,229.19