Finding the Fourth Proportional to 16,721.98, 25,101.15 and 12,573.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,721.98 : 25,101.15 = 12,573.88 : x
2. Step 2: Convert to fraction form
   16,721.98/25,101.15 = 12,573.88/x
3. Step 3: Cross multiply
   16,721.98x = 25,101.15 × 12,573.88
4. Step 4: Simplify right side
   16,721.98x = 315,618,847.96
5. Step 5: Solve for x
   x = 315,618,847.96/16,721.98
6. Step 6: Final answer
   x = 18,874.49