Finding the Fourth Proportional to 8,641.69, 12,962.84 and 4,942.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,641.69 : 12,962.84 = 4,942.22 : x
2. Step 2: Convert to fraction form
   8,641.69/12,962.84 = 4,942.22/x
3. Step 3: Cross multiply
   8,641.69x = 12,962.84 × 4,942.22
4. Step 4: Simplify right side
   8,641.69x = 64,065,117.58
5. Step 5: Solve for x
   x = 64,065,117.58/8,641.69
6. Step 6: Final answer
   x = 7,413.50