Finding the Fourth Proportional to 8,131.71, 12,198.38 and 2,208.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.71 : 12,198.38 = 2,208.69 : x
2. Step 2: Convert to fraction form
   8,131.71/12,198.38 = 2,208.69/x
3. Step 3: Cross multiply
   8,131.71x = 12,198.38 × 2,208.69
4. Step 4: Simplify right side
   8,131.71x = 26,942,428.88
5. Step 5: Solve for x
   x = 26,942,428.88/8,131.71
6. Step 6: Final answer
   x = 3,313.26