Finding the Fourth Proportional to 3,179.16, 4,374.24 and 3,105.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,179.16 : 4,374.24 = 3,105.48 : x
2. Step 2: Convert to fraction form
   3,179.16/4,374.24 = 3,105.48/x
3. Step 3: Cross multiply
   3,179.16x = 4,374.24 × 3,105.48
4. Step 4: Simplify right side
   3,179.16x = 13,584,114.84
5. Step 5: Solve for x
   x = 13,584,114.84/3,179.16
6. Step 6: Final answer
   x = 4,272.86