Finding the Fourth Proportional to 22,519.42, 31,076.25 and 12,447.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,519.42 : 31,076.25 = 12,447.60 : x
2. Step 2: Convert to fraction form
   22,519.42/31,076.25 = 12,447.60/x
3. Step 3: Cross multiply
   22,519.42x = 31,076.25 × 12,447.60
4. Step 4: Simplify right side
   22,519.42x = 386,824,822.78
5. Step 5: Solve for x
   x = 386,824,822.78/22,519.42
6. Step 6: Final answer
   x = 17,177.39