Finding the Fourth Proportional to 4,106.78, 5,665.98 and 2,428.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,106.78 : 5,665.98 = 2,428.72 : x
2. Step 2: Convert to fraction form
   4,106.78/5,665.98 = 2,428.72/x
3. Step 3: Cross multiply
   4,106.78x = 5,665.98 × 2,428.72
4. Step 4: Simplify right side
   4,106.78x = 13,761,078.95
5. Step 5: Solve for x
   x = 13,761,078.95/4,106.78
6. Step 6: Final answer
   x = 3,350.82