Finding the Fourth Proportional to 3,894.33, 5,870.23 and 3,668.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,894.33 : 5,870.23 = 3,668.55 : x
2. Step 2: Convert to fraction form
   3,894.33/5,870.23 = 3,668.55/x
3. Step 3: Cross multiply
   3,894.33x = 5,870.23 × 3,668.55
4. Step 4: Simplify right side
   3,894.33x = 21,535,232.27
5. Step 5: Solve for x
   x = 21,535,232.27/3,894.33
6. Step 6: Final answer
   x = 5,529.89