Finding the Fourth Proportional to 8,171.69, 12,262.72 and 3,491.73

Step by Step Solution

1. Step 1: Write the proportion equation
   8,171.69 : 12,262.72 = 3,491.73 : x
2. Step 2: Convert to fraction form
   8,171.69/12,262.72 = 3,491.73/x
3. Step 3: Cross multiply
   8,171.69x = 12,262.72 × 3,491.73
4. Step 4: Simplify right side
   8,171.69x = 42,818,129.79
5. Step 5: Solve for x
   x = 42,818,129.79/8,171.69
6. Step 6: Final answer
   x = 5,239.81