Finding the Fourth Proportional to 5,221.54, 7,205.72 and 2,863.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,221.54 : 7,205.72 = 2,863.72 : x
2. Step 2: Convert to fraction form
   5,221.54/7,205.72 = 2,863.72/x
3. Step 3: Cross multiply
   5,221.54x = 7,205.72 × 2,863.72
4. Step 4: Simplify right side
   5,221.54x = 20,635,164.48
5. Step 5: Solve for x
   x = 20,635,164.48/5,221.54
6. Step 6: Final answer
   x = 3,951.93