Finding the Fourth Proportional to 8,771.65, 13,157.25 and 3,222.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,771.65 : 13,157.25 = 3,222.59 : x
2. Step 2: Convert to fraction form
   8,771.65/13,157.25 = 3,222.59/x
3. Step 3: Cross multiply
   8,771.65x = 13,157.25 × 3,222.59
4. Step 4: Simplify right side
   8,771.65x = 42,400,443.09
5. Step 5: Solve for x
   x = 42,400,443.09/8,771.65
6. Step 6: Final answer
   x = 4,833.81