Finding the Fourth Proportional to 12,413.09, 18,619.61 and 5,392.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,413.09 : 18,619.61 = 5,392.22 : x
2. Step 2: Convert to fraction form
   12,413.09/18,619.61 = 5,392.22/x
3. Step 3: Cross multiply
   12,413.09x = 18,619.61 × 5,392.22
4. Step 4: Simplify right side
   12,413.09x = 100,400,953.82
5. Step 5: Solve for x
   x = 100,400,953.82/12,413.09
6. Step 6: Final answer
   x = 8,088.31