Finding the Fourth Proportional to 21,972.72, 30,324.23 and 12,414.37

Step by Step Solution

1. Step 1: Write the proportion equation
   21,972.72 : 30,324.23 = 12,414.37 : x
2. Step 2: Convert to fraction form
   21,972.72/30,324.23 = 12,414.37/x
3. Step 3: Cross multiply
   21,972.72x = 30,324.23 × 12,414.37
4. Step 4: Simplify right side
   21,972.72x = 376,456,233.57
5. Step 5: Solve for x
   x = 376,456,233.57/21,972.72
6. Step 6: Final answer
   x = 17,132.89