Finding the Fourth Proportional to 18,196.26, 25,109.88 and 10,239

Step by Step Solution

1. Step 1: Write the proportion equation
   18,196.26 : 25,109.88 = 10,239 : x
2. Step 2: Convert to fraction form
   18,196.26/25,109.88 = 10,239/x
3. Step 3: Cross multiply
   18,196.26x = 25,109.88 × 10,239
4. Step 4: Simplify right side
   18,196.26x = 257,100,061.32
5. Step 5: Solve for x
   x = 257,100,061.32/18,196.26
6. Step 6: Final answer
   x = 14,129.28