Finding the Fourth Proportional to 8,131.50, 12,198.33 and 3,515.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.50 : 12,198.33 = 3,515.58 : x
2. Step 2: Convert to fraction form
   8,131.50/12,198.33 = 3,515.58/x
3. Step 3: Cross multiply
   8,131.50x = 12,198.33 × 3,515.58
4. Step 4: Simplify right side
   8,131.50x = 42,884,204.98
5. Step 5: Solve for x
   x = 42,884,204.98/8,131.50
6. Step 6: Final answer
   x = 5,273.84