Finding the Fourth Proportional to 8,766.06, 13,144.05 and 3,221.13

Step by Step Solution

1. Step 1: Write the proportion equation
   8,766.06 : 13,144.05 = 3,221.13 : x
2. Step 2: Convert to fraction form
   8,766.06/13,144.05 = 3,221.13/x
3. Step 3: Cross multiply
   8,766.06x = 13,144.05 × 3,221.13
4. Step 4: Simplify right side
   8,766.06x = 42,338,693.78
5. Step 5: Solve for x
   x = 42,338,693.78/8,766.06
6. Step 6: Final answer
   x = 4,829.84