Finding the Fourth Proportional to 3,578.66, 5,361.03 and 2,013.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578.66 : 5,361.03 = 2,013.89 : x
2. Step 2: Convert to fraction form
   3,578.66/5,361.03 = 2,013.89/x
3. Step 3: Cross multiply
   3,578.66x = 5,361.03 × 2,013.89
4. Step 4: Simplify right side
   3,578.66x = 10,796,524.71
5. Step 5: Solve for x
   x = 10,796,524.71/3,578.66
6. Step 6: Final answer
   x = 3,016.92