Finding the Fourth Proportional to 18,446.62, 25,453.15 and 10,379.15

Step by Step Solution

1. Step 1: Write the proportion equation
   18,446.62 : 25,453.15 = 10,379.15 : x
2. Step 2: Convert to fraction form
   18,446.62/25,453.15 = 10,379.15/x
3. Step 3: Cross multiply
   18,446.62x = 25,453.15 × 10,379.15
4. Step 4: Simplify right side
   18,446.62x = 264,182,061.82
5. Step 5: Solve for x
   x = 264,182,061.82/18,446.62
6. Step 6: Final answer
   x = 14,321.43