Finding the Fourth Proportional to 3,608.10, 5,404.05 and 3,608.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,608.10 : 5,404.05 = 3,608.10 : x
2. Step 2: Convert to fraction form
   3,608.10/5,404.05 = 3,608.10/x
3. Step 3: Cross multiply
   3,608.10x = 5,404.05 × 3,608.10
4. Step 4: Simplify right side
   3,608.10x = 19,498,352.81
5. Step 5: Solve for x
   x = 19,498,352.81/3,608.10
6. Step 6: Final answer
   x = 5,404.05