Finding the Fourth Proportional to 3,678.18, 5,544.83 and 3,433.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678.18 : 5,544.83 = 3,433.78 : x
2. Step 2: Convert to fraction form
   3,678.18/5,544.83 = 3,433.78/x
3. Step 3: Cross multiply
   3,678.18x = 5,544.83 × 3,433.78
4. Step 4: Simplify right side
   3,678.18x = 19,039,726.36
5. Step 5: Solve for x
   x = 19,039,726.36/3,678.18
6. Step 6: Final answer
   x = 5,176.40