Finding the Fourth Proportional to 8,109.24, 12,158.37 and 3,175.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.24 : 12,158.37 = 3,175.80 : x
2. Step 2: Convert to fraction form
   8,109.24/12,158.37 = 3,175.80/x
3. Step 3: Cross multiply
   8,109.24x = 12,158.37 × 3,175.80
4. Step 4: Simplify right side
   8,109.24x = 38,612,551.45
5. Step 5: Solve for x
   x = 38,612,551.45/8,109.24
6. Step 6: Final answer
   x = 4,761.55