Finding the Fourth Proportional to 23,105.43, 31,885.53 and 12,495.06

Step by Step Solution

1. Step 1: Write the proportion equation
   23,105.43 : 31,885.53 = 12,495.06 : x
2. Step 2: Convert to fraction form
   23,105.43/31,885.53 = 12,495.06/x
3. Step 3: Cross multiply
   23,105.43x = 31,885.53 × 12,495.06
4. Step 4: Simplify right side
   23,105.43x = 398,411,610.48
5. Step 5: Solve for x
   x = 398,411,610.48/23,105.43
6. Step 6: Final answer
   x = 17,243.20