Finding the Fourth Proportional to 3,906.50, 5,845.83 and 3,131.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.50 : 5,845.83 = 3,131.48 : x
2. Step 2: Convert to fraction form
   3,906.50/5,845.83 = 3,131.48/x
3. Step 3: Cross multiply
   3,906.50x = 5,845.83 × 3,131.48
4. Step 4: Simplify right side
   3,906.50x = 18,306,070.50
5. Step 5: Solve for x
   x = 18,306,070.50/3,906.50
6. Step 6: Final answer
   x = 4,686.06