Finding the Fourth Proportional to 8,172.73, 12,250.43 and 3,488.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,172.73 : 12,250.43 = 3,488.91 : x
2. Step 2: Convert to fraction form
   8,172.73/12,250.43 = 3,488.91/x
3. Step 3: Cross multiply
   8,172.73x = 12,250.43 × 3,488.91
4. Step 4: Simplify right side
   8,172.73x = 42,740,647.73
5. Step 5: Solve for x
   x = 42,740,647.73/8,172.73
6. Step 6: Final answer
   x = 5,229.67