Finding the Fourth Proportional to 3,678.26, 5,061.17 and 3,590.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,678.26 : 5,061.17 = 3,590.78 : x
2. Step 2: Convert to fraction form
   3,678.26/5,061.17 = 3,590.78/x
3. Step 3: Cross multiply
   3,678.26x = 5,061.17 × 3,590.78
4. Step 4: Simplify right side
   3,678.26x = 18,173,531.68
5. Step 5: Solve for x
   x = 18,173,531.68/3,678.26
6. Step 6: Final answer
   x = 4,940.80