Finding the Fourth Proportional to 8,171.25, 12,254.76 and 3,488.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,171.25 : 12,254.76 = 3,488.91 : x
2. Step 2: Convert to fraction form
   8,171.25/12,254.76 = 3,488.91/x
3. Step 3: Cross multiply
   8,171.25x = 12,254.76 × 3,488.91
4. Step 4: Simplify right side
   8,171.25x = 42,755,754.71
5. Step 5: Solve for x
   x = 42,755,754.71/8,171.25
6. Step 6: Final answer
   x = 5,232.46