Finding the Fourth Proportional to 23,013.38, 31,754.49 and 12,940.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,013.38 : 31,754.49 = 12,940.42 : x
2. Step 2: Convert to fraction form
   23,013.38/31,754.49 = 12,940.42/x
3. Step 3: Cross multiply
   23,013.38x = 31,754.49 × 12,940.42
4. Step 4: Simplify right side
   23,013.38x = 410,916,437.49
5. Step 5: Solve for x
   x = 410,916,437.49/23,013.38
6. Step 6: Final answer
   x = 17,855.54