Finding the Fourth Proportional to 18,196.15, 25,110.75 and 10,238.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,196.15 : 25,110.75 = 10,238.50 : x
2. Step 2: Convert to fraction form
   18,196.15/25,110.75 = 10,238.50/x
3. Step 3: Cross multiply
   18,196.15x = 25,110.75 × 10,238.50
4. Step 4: Simplify right side
   18,196.15x = 257,096,413.88
5. Step 5: Solve for x
   x = 257,096,413.88/18,196.15
6. Step 6: Final answer
   x = 14,129.17