Finding the Fourth Proportional to 20,259.98, 30,389.98 and 16,789.94

Step by Step Solution

1. Step 1: Write the proportion equation
   20,259.98 : 30,389.98 = 16,789.94 : x
2. Step 2: Convert to fraction form
   20,259.98/30,389.98 = 16,789.94/x
3. Step 3: Cross multiply
   20,259.98x = 30,389.98 × 16,789.94
4. Step 4: Simplify right side
   20,259.98x = 510,245,974.80
5. Step 5: Solve for x
   x = 510,245,974.80/20,259.98
6. Step 6: Final answer
   x = 25,184.92