Finding the Fourth Proportional to 18,456.94, 25,470.35 and 10,499.14

Step by Step Solution

1. Step 1: Write the proportion equation
   18,456.94 : 25,470.35 = 10,499.14 : x
2. Step 2: Convert to fraction form
   18,456.94/25,470.35 = 10,499.14/x
3. Step 3: Cross multiply
   18,456.94x = 25,470.35 × 10,499.14
4. Step 4: Simplify right side
   18,456.94x = 267,416,770.50
5. Step 5: Solve for x
   x = 267,416,770.50/18,456.94
6. Step 6: Final answer
   x = 14,488.69