Finding the Fourth Proportional to 8,111.94, 12,163.24 and 3,175.80

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.94 : 12,163.24 = 3,175.80 : x
2. Step 2: Convert to fraction form
   8,111.94/12,163.24 = 3,175.80/x
3. Step 3: Cross multiply
   8,111.94x = 12,163.24 × 3,175.80
4. Step 4: Simplify right side
   8,111.94x = 38,628,017.59
5. Step 5: Solve for x
   x = 38,628,017.59/8,111.94
6. Step 6: Final answer
   x = 4,761.87