Finding the Fourth Proportional to 18,456.45, 25,470.50 and 10,498.47

Step by Step Solution

1. Step 1: Write the proportion equation
   18,456.45 : 25,470.50 = 10,498.47 : x
2. Step 2: Convert to fraction form
   18,456.45/25,470.50 = 10,498.47/x
3. Step 3: Cross multiply
   18,456.45x = 25,470.50 × 10,498.47
4. Step 4: Simplify right side
   18,456.45x = 267,401,280.14
5. Step 5: Solve for x
   x = 267,401,280.14/18,456.45
6. Step 6: Final answer
   x = 14,488.23