Finding the Fourth Proportional to 23,170.49, 31,974.41 and 12,559.89

Step by Step Solution

1. Step 1: Write the proportion equation
   23,170.49 : 31,974.41 = 12,559.89 : x
2. Step 2: Convert to fraction form
   23,170.49/31,974.41 = 12,559.89/x
3. Step 3: Cross multiply
   23,170.49x = 31,974.41 × 12,559.89
4. Step 4: Simplify right side
   23,170.49x = 401,595,103.81
5. Step 5: Solve for x
   x = 401,595,103.81/23,170.49
6. Step 6: Final answer
   x = 17,332.18