Finding the Fourth Proportional to 23,145, 31,939.96 and 12,534.52

Step by Step Solution

1. Step 1: Write the proportion equation
   23,145 : 31,939.96 = 12,534.52 : x
2. Step 2: Convert to fraction form
   23,145/31,939.96 = 12,534.52/x
3. Step 3: Cross multiply
   23,145x = 31,939.96 × 12,534.52
4. Step 4: Simplify right side
   23,145x = 400,352,067.42
5. Step 5: Solve for x
   x = 400,352,067.42/23,145
6. Step 6: Final answer
   x = 17,297.56