Finding the Fourth Proportional to 23,105.70, 31,885.97 and 12,495.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,105.70 : 31,885.97 = 12,495.42 : x
2. Step 2: Convert to fraction form
   23,105.70/31,885.97 = 12,495.42/x
3. Step 3: Cross multiply
   23,105.70x = 31,885.97 × 12,495.42
4. Step 4: Simplify right side
   23,105.70x = 398,428,524.78
5. Step 5: Solve for x
   x = 398,428,524.78/23,105.70
6. Step 6: Final answer
   x = 17,243.73