Finding the Fourth Proportional to 22,608.71, 31,198.50 and 12,536.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,608.71 : 31,198.50 = 12,536.78 : x
2. Step 2: Convert to fraction form
   22,608.71/31,198.50 = 12,536.78/x
3. Step 3: Cross multiply
   22,608.71x = 31,198.50 × 12,536.78
4. Step 4: Simplify right side
   22,608.71x = 391,128,825.16
5. Step 5: Solve for x
   x = 391,128,825.16/22,608.71
6. Step 6: Final answer
   x = 17,299.92