Finding the Fourth Proportional to 23,105.42, 31,885.48 and 12,495.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,105.42 : 31,885.48 = 12,495.05 : x
2. Step 2: Convert to fraction form
   23,105.42/31,885.48 = 12,495.05/x
3. Step 3: Cross multiply
   23,105.42x = 31,885.48 × 12,495.05
4. Step 4: Simplify right side
   23,105.42x = 398,410,666.87
5. Step 5: Solve for x
   x = 398,410,666.87/23,105.42
6. Step 6: Final answer
   x = 17,243.17