Finding the Fourth Proportional to 18,443.24, 25,445.75 and 10,889.89

Step by Step Solution

1. Step 1: Write the proportion equation
   18,443.24 : 25,445.75 = 10,889.89 : x
2. Step 2: Convert to fraction form
   18,443.24/25,445.75 = 10,889.89/x
3. Step 3: Cross multiply
   18,443.24x = 25,445.75 × 10,889.89
4. Step 4: Simplify right side
   18,443.24x = 277,101,443.54
5. Step 5: Solve for x
   x = 277,101,443.54/18,443.24
6. Step 6: Final answer
   x = 15,024.55