Finding the Fourth Proportional to 3,731.05, 5,142.72 and 3,100.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,731.05 : 5,142.72 = 3,100.33 : x
2. Step 2: Convert to fraction form
   3,731.05/5,142.72 = 3,100.33/x
3. Step 3: Cross multiply
   3,731.05x = 5,142.72 × 3,100.33
4. Step 4: Simplify right side
   3,731.05x = 15,944,129.10
5. Step 5: Solve for x
   x = 15,944,129.10/3,731.05
6. Step 6: Final answer
   x = 4,273.36