Finding the Fourth Proportional to 3,626.10, 5,430.78 and 3,565.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,626.10 : 5,430.78 = 3,565.89 : x
2. Step 2: Convert to fraction form
   3,626.10/5,430.78 = 3,565.89/x
3. Step 3: Cross multiply
   3,626.10x = 5,430.78 × 3,565.89
4. Step 4: Simplify right side
   3,626.10x = 19,365,564.09
5. Step 5: Solve for x
   x = 19,365,564.09/3,626.10
6. Step 6: Final answer
   x = 5,340.60