Finding the Fourth Proportional to 22,743.88, 31,386.18 and 12,673

Step by Step Solution

1. Step 1: Write the proportion equation
   22,743.88 : 31,386.18 = 12,673 : x
2. Step 2: Convert to fraction form
   22,743.88/31,386.18 = 12,673/x
3. Step 3: Cross multiply
   22,743.88x = 31,386.18 × 12,673
4. Step 4: Simplify right side
   22,743.88x = 397,757,059.14
5. Step 5: Solve for x
   x = 397,757,059.14/22,743.88
6. Step 6: Final answer
   x = 17,488.53