Finding the Fourth Proportional to 23,166.18, 31,969.41 and 12,555.79

Step by Step Solution

1. Step 1: Write the proportion equation
   23,166.18 : 31,969.41 = 12,555.79 : x
2. Step 2: Convert to fraction form
   23,166.18/31,969.41 = 12,555.79/x
3. Step 3: Cross multiply
   23,166.18x = 31,969.41 × 12,555.79
4. Step 4: Simplify right side
   23,166.18x = 401,401,198.38
5. Step 5: Solve for x
   x = 401,401,198.38/23,166.18
6. Step 6: Final answer
   x = 17,327.03