Finding the Fourth Proportional to 3,993.72, 5,974.52 and 3,451.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,993.72 : 5,974.52 = 3,451.72 : x
2. Step 2: Convert to fraction form
   3,993.72/5,974.52 = 3,451.72/x
3. Step 3: Cross multiply
   3,993.72x = 5,974.52 × 3,451.72
4. Step 4: Simplify right side
   3,993.72x = 20,622,370.17
5. Step 5: Solve for x
   x = 20,622,370.17/3,993.72
6. Step 6: Final answer
   x = 5,163.70