Finding the Fourth Proportional to 5,574.40, 7,692.72 and 3,585.60

Step by Step Solution

1. Step 1: Write the proportion equation
   5,574.40 : 7,692.72 = 3,585.60 : x
2. Step 2: Convert to fraction form
   5,574.40/7,692.72 = 3,585.60/x
3. Step 3: Cross multiply
   5,574.40x = 7,692.72 × 3,585.60
4. Step 4: Simplify right side
   5,574.40x = 27,583,016.83
5. Step 5: Solve for x
   x = 27,583,016.83/5,574.40
6. Step 6: Final answer
   x = 4,948.16