Finding the Fourth Proportional to 8,131.57, 12,197.33 and 2,288.17

Step by Step Solution

1. Step 1: Write the proportion equation
   8,131.57 : 12,197.33 = 2,288.17 : x
2. Step 2: Convert to fraction form
   8,131.57/12,197.33 = 2,288.17/x
3. Step 3: Cross multiply
   8,131.57x = 12,197.33 × 2,288.17
4. Step 4: Simplify right side
   8,131.57x = 27,909,564.59
5. Step 5: Solve for x
   x = 27,909,564.59/8,131.57
6. Step 6: Final answer
   x = 3,432.25