Finding the Fourth Proportional to 3,951.74, 5,451.36 and 3,206.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,951.74 : 5,451.36 = 3,206.54 : x
2. Step 2: Convert to fraction form
   3,951.74/5,451.36 = 3,206.54/x
3. Step 3: Cross multiply
   3,951.74x = 5,451.36 × 3,206.54
4. Step 4: Simplify right side
   3,951.74x = 17,480,003.89
5. Step 5: Solve for x
   x = 17,480,003.89/3,951.74
6. Step 6: Final answer
   x = 4,423.37