Finding the Fourth Proportional to 18,196.88, 25,107.52 and 10,236.20

Step by Step Solution

1. Step 1: Write the proportion equation
   18,196.88 : 25,107.52 = 10,236.20 : x
2. Step 2: Convert to fraction form
   18,196.88/25,107.52 = 10,236.20/x
3. Step 3: Cross multiply
   18,196.88x = 25,107.52 × 10,236.20
4. Step 4: Simplify right side
   18,196.88x = 257,005,596.22
5. Step 5: Solve for x
   x = 257,005,596.22/18,196.88
6. Step 6: Final answer
   x = 14,123.61