Finding the Fourth Proportional to 5,661.81, 8,488.25 and 3,577.41

Step by Step Solution

1. Step 1: Write the proportion equation
   5,661.81 : 8,488.25 = 3,577.41 : x
2. Step 2: Convert to fraction form
   5,661.81/8,488.25 = 3,577.41/x
3. Step 3: Cross multiply
   5,661.81x = 8,488.25 × 3,577.41
4. Step 4: Simplify right side
   5,661.81x = 30,365,964.38
5. Step 5: Solve for x
   x = 30,365,964.38/5,661.81
6. Step 6: Final answer
   x = 5,363.30