Finding the Fourth Proportional to 3,870.35, 5,819.54 and 3,565.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.35 : 5,819.54 = 3,565.88 : x
2. Step 2: Convert to fraction form
   3,870.35/5,819.54 = 3,565.88/x
3. Step 3: Cross multiply
   3,870.35x = 5,819.54 × 3,565.88
4. Step 4: Simplify right side
   3,870.35x = 20,751,781.30
5. Step 5: Solve for x
   x = 20,751,781.30/3,870.35
6. Step 6: Final answer
   x = 5,361.73