Finding the Fourth Proportional to 3,878.79, 5,790.03 and 3,589.68

Step by Step Solution

1. Step 1: Write the proportion equation
   3,878.79 : 5,790.03 = 3,589.68 : x
2. Step 2: Convert to fraction form
   3,878.79/5,790.03 = 3,589.68/x
3. Step 3: Cross multiply
   3,878.79x = 5,790.03 × 3,589.68
4. Step 4: Simplify right side
   3,878.79x = 20,784,354.89
5. Step 5: Solve for x
   x = 20,784,354.89/3,878.79
6. Step 6: Final answer
   x = 5,358.46