Finding the Fourth Proportional to 23,158.10, 31,958.21 and 12,547.73

Step by Step Solution

1. Step 1: Write the proportion equation
   23,158.10 : 31,958.21 = 12,547.73 : x
2. Step 2: Convert to fraction form
   23,158.10/31,958.21 = 12,547.73/x
3. Step 3: Cross multiply
   23,158.10x = 31,958.21 × 12,547.73
4. Step 4: Simplify right side
   23,158.10x = 401,002,990.36
5. Step 5: Solve for x
   x = 401,002,990.36/23,158.10
6. Step 6: Final answer
   x = 17,315.88