Finding the Fourth Proportional to 18,196.42, 25,111.29 and 10,238.66

Step by Step Solution

1. Step 1: Write the proportion equation
   18,196.42 : 25,111.29 = 10,238.66 : x
2. Step 2: Convert to fraction form
   18,196.42/25,111.29 = 10,238.66/x
3. Step 3: Cross multiply
   18,196.42x = 25,111.29 × 10,238.66
4. Step 4: Simplify right side
   18,196.42x = 257,105,960.47
5. Step 5: Solve for x
   x = 257,105,960.47/18,196.42
6. Step 6: Final answer
   x = 14,129.48