Finding the Fourth Proportional to 5,638.50, 7,772.85 and 3,954.83

Step by Step Solution

1. Step 1: Write the proportion equation
   5,638.50 : 7,772.85 = 3,954.83 : x
2. Step 2: Convert to fraction form
   5,638.50/7,772.85 = 3,954.83/x
3. Step 3: Cross multiply
   5,638.50x = 7,772.85 × 3,954.83
4. Step 4: Simplify right side
   5,638.50x = 30,740,261.50
5. Step 5: Solve for x
   x = 30,740,261.50/5,638.50
6. Step 6: Final answer
   x = 5,451.85