Finding the Fourth Proportional to 12,406.67, 18,568.42 and 10,185.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,406.67 : 18,568.42 = 10,185.38 : x
2. Step 2: Convert to fraction form
   12,406.67/18,568.42 = 10,185.38/x
3. Step 3: Cross multiply
   12,406.67x = 18,568.42 × 10,185.38
4. Step 4: Simplify right side
   12,406.67x = 189,126,413.70
5. Step 5: Solve for x
   x = 189,126,413.70/12,406.67
6. Step 6: Final answer
   x = 15,243.93