Finding the Fourth Proportional to 23,169.94, 31,974.42 and 12,559.55

Step by Step Solution

1. Step 1: Write the proportion equation
   23,169.94 : 31,974.42 = 12,559.55 : x
2. Step 2: Convert to fraction form
   23,169.94/31,974.42 = 12,559.55/x
3. Step 3: Cross multiply
   23,169.94x = 31,974.42 × 12,559.55
4. Step 4: Simplify right side
   23,169.94x = 401,584,326.71
5. Step 5: Solve for x
   x = 401,584,326.71/23,169.94
6. Step 6: Final answer
   x = 17,332.13