Finding the Fourth Proportional to 8,131.06, 12,197.31 and 2,287.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.06 : 12,197.31 = 2,287.72 : x
2. Step 2: Convert to fraction form
   8,131.06/12,197.31 = 2,287.72/x
3. Step 3: Cross multiply
   8,131.06x = 12,197.31 × 2,287.72
4. Step 4: Simplify right side
   8,131.06x = 27,904,030.03
5. Step 5: Solve for x
   x = 27,904,030.03/8,131.06
6. Step 6: Final answer
   x = 3,431.78