Finding the Fourth Proportional to 18,613, 25,685.94 and 10,229.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,613 : 25,685.94 = 10,229.50 : x
2. Step 2: Convert to fraction form
   18,613/25,685.94 = 10,229.50/x
3. Step 3: Cross multiply
   18,613x = 25,685.94 × 10,229.50
4. Step 4: Simplify right side
   18,613x = 262,754,323.23
5. Step 5: Solve for x
   x = 262,754,323.23/18,613
6. Step 6: Final answer
   x = 14,116.71