Finding the Fourth Proportional to 12,231.32, 18,356.16 and 5,662.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,231.32 : 18,356.16 = 5,662.10 : x
2. Step 2: Convert to fraction form
   12,231.32/18,356.16 = 5,662.10/x
3. Step 3: Cross multiply
   12,231.32x = 18,356.16 × 5,662.10
4. Step 4: Simplify right side
   12,231.32x = 103,934,413.54
5. Step 5: Solve for x
   x = 103,934,413.54/12,231.32
6. Step 6: Final answer
   x = 8,497.40