Finding the Fourth Proportional to 4,427.72, 6,111.82 and 3,105.33

Step by Step Solution

1. Step 1: Write the proportion equation
   4,427.72 : 6,111.82 = 3,105.33 : x
2. Step 2: Convert to fraction form
   4,427.72/6,111.82 = 3,105.33/x
3. Step 3: Cross multiply
   4,427.72x = 6,111.82 × 3,105.33
4. Step 4: Simplify right side
   4,427.72x = 18,979,218.00
5. Step 5: Solve for x
   x = 18,979,218.00/4,427.72
6. Step 6: Final answer
   x = 4,286.45