Finding the Fourth Proportional to 3,358.72, 5,034.60 and 2,431.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,358.72 : 5,034.60 = 2,431.96 : x
2. Step 2: Convert to fraction form
   3,358.72/5,034.60 = 2,431.96/x
3. Step 3: Cross multiply
   3,358.72x = 5,034.60 × 2,431.96
4. Step 4: Simplify right side
   3,358.72x = 12,243,945.82
5. Step 5: Solve for x
   x = 12,243,945.82/3,358.72
6. Step 6: Final answer
   x = 3,645.42