Finding the Fourth Proportional to 3,806.69, 5,718.29 and 3,222.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,806.69 : 5,718.29 = 3,222.89 : x
2. Step 2: Convert to fraction form
   3,806.69/5,718.29 = 3,222.89/x
3. Step 3: Cross multiply
   3,806.69x = 5,718.29 × 3,222.89
4. Step 4: Simplify right side
   3,806.69x = 18,429,374.95
5. Step 5: Solve for x
   x = 18,429,374.95/3,806.69
6. Step 6: Final answer
   x = 4,841.31