Finding the Fourth Proportional to 6,418.45, 8,859.41 and 4,061.35

Step by Step Solution

1. Step 1: Write the proportion equation
   6,418.45 : 8,859.41 = 4,061.35 : x
2. Step 2: Convert to fraction form
   6,418.45/8,859.41 = 4,061.35/x
3. Step 3: Cross multiply
   6,418.45x = 8,859.41 × 4,061.35
4. Step 4: Simplify right side
   6,418.45x = 35,981,164.80
5. Step 5: Solve for x
   x = 35,981,164.80/6,418.45
6. Step 6: Final answer
   x = 5,605.90