Finding the Fourth Proportional to 18,443.09, 25,451.39 and 10,485.31

Step by Step Solution

1. Step 1: Write the proportion equation
   18,443.09 : 25,451.39 = 10,485.31 : x
2. Step 2: Convert to fraction form
   18,443.09/25,451.39 = 10,485.31/x
3. Step 3: Cross multiply
   18,443.09x = 25,451.39 × 10,485.31
4. Step 4: Simplify right side
   18,443.09x = 266,865,714.08
5. Step 5: Solve for x
   x = 266,865,714.08/18,443.09
6. Step 6: Final answer
   x = 14,469.69