Finding the Fourth Proportional to 8,131.54, 12,190.82 and 3,200.26

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.54 : 12,190.82 = 3,200.26 : x
2. Step 2: Convert to fraction form
   8,131.54/12,190.82 = 3,200.26/x
3. Step 3: Cross multiply
   8,131.54x = 12,190.82 × 3,200.26
4. Step 4: Simplify right side
   8,131.54x = 39,013,793.61
5. Step 5: Solve for x
   x = 39,013,793.61/8,131.54
6. Step 6: Final answer
   x = 4,797.84