Finding the Fourth Proportional to 18,238.09, 25,168.56 and 9,854.59

Step by Step Solution

1. Step 1: Write the proportion equation
   18,238.09 : 25,168.56 = 9,854.59 : x
2. Step 2: Convert to fraction form
   18,238.09/25,168.56 = 9,854.59/x
3. Step 3: Cross multiply
   18,238.09x = 25,168.56 × 9,854.59
4. Step 4: Simplify right side
   18,238.09x = 248,025,839.69
5. Step 5: Solve for x
   x = 248,025,839.69/18,238.09
6. Step 6: Final answer
   x = 13,599.33