Finding the Fourth Proportional to 23,158.24, 31,958.40 and 12,547.96

Step by Step Solution

1. Step 1: Write the proportion equation
   23,158.24 : 31,958.40 = 12,547.96 : x
2. Step 2: Convert to fraction form
   23,158.24/31,958.40 = 12,547.96/x
3. Step 3: Cross multiply
   23,158.24x = 31,958.40 × 12,547.96
4. Step 4: Simplify right side
   23,158.24x = 401,012,724.86
5. Step 5: Solve for x
   x = 401,012,724.86/23,158.24
6. Step 6: Final answer
   x = 17,316.20