Finding the Fourth Proportional to 18,456.74, 25,469.96 and 10,498.80

Step by Step Solution

1. Step 1: Write the proportion equation
   18,456.74 : 25,469.96 = 10,498.80 : x
2. Step 2: Convert to fraction form
   18,456.74/25,469.96 = 10,498.80/x
3. Step 3: Cross multiply
   18,456.74x = 25,469.96 × 10,498.80
4. Step 4: Simplify right side
   18,456.74x = 267,404,016.05
5. Step 5: Solve for x
   x = 267,404,016.05/18,456.74
6. Step 6: Final answer
   x = 14,488.15