Finding the Fourth Proportional to 23,042.73, 31,790.27 and 13,479.57

Step by Step Solution

1. Step 1: Write the proportion equation
   23,042.73 : 31,790.27 = 13,479.57 : x
2. Step 2: Convert to fraction form
   23,042.73/31,790.27 = 13,479.57/x
3. Step 3: Cross multiply
   23,042.73x = 31,790.27 × 13,479.57
4. Step 4: Simplify right side
   23,042.73x = 428,519,169.78
5. Step 5: Solve for x
   x = 428,519,169.78/23,042.73
6. Step 6: Final answer
   x = 18,596.72