Finding the Fourth Proportional to 6,443.55, 8,890.02 and 3,791.61

Step by Step Solution

1. Step 1: Write the proportion equation
   6,443.55 : 8,890.02 = 3,791.61 : x
2. Step 2: Convert to fraction form
   6,443.55/8,890.02 = 3,791.61/x
3. Step 3: Cross multiply
   6,443.55x = 8,890.02 × 3,791.61
4. Step 4: Simplify right side
   6,443.55x = 33,707,488.73
5. Step 5: Solve for x
   x = 33,707,488.73/6,443.55
6. Step 6: Final answer
   x = 5,231.20