Finding the Fourth Proportional to 5,578.90, 8,359.88 and 3,817.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,578.90 : 8,359.88 = 3,817.69 : x
2. Step 2: Convert to fraction form
   5,578.90/8,359.88 = 3,817.69/x
3. Step 3: Cross multiply
   5,578.90x = 8,359.88 × 3,817.69
4. Step 4: Simplify right side
   5,578.90x = 31,915,390.29
5. Step 5: Solve for x
   x = 31,915,390.29/5,578.90
6. Step 6: Final answer
   x = 5,720.73