Finding the Fourth Proportional to 3,595.69, 5,423.91 and 3,406.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,595.69 : 5,423.91 = 3,406.62 : x
2. Step 2: Convert to fraction form
   3,595.69/5,423.91 = 3,406.62/x
3. Step 3: Cross multiply
   3,595.69x = 5,423.91 × 3,406.62
4. Step 4: Simplify right side
   3,595.69x = 18,477,183.25
5. Step 5: Solve for x
   x = 18,477,183.25/3,595.69
6. Step 6: Final answer
   x = 5,138.71