Finding the Fourth Proportional to 21,752.74, 30,028.89 and 16,377.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,752.74 : 30,028.89 = 16,377.31 : x
2. Step 2: Convert to fraction form
   21,752.74/30,028.89 = 16,377.31/x
3. Step 3: Cross multiply
   21,752.74x = 30,028.89 × 16,377.31
4. Step 4: Simplify right side
   21,752.74x = 491,792,440.49
5. Step 5: Solve for x
   x = 491,792,440.49/21,752.74
6. Step 6: Final answer
   x = 22,608.30