Finding the Fourth Proportional to 5,622.98, 7,758.69 and 3,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,622.98 : 7,758.69 = 3,949.50 : x
2. Step 2: Convert to fraction form
   5,622.98/7,758.69 = 3,949.50/x
3. Step 3: Cross multiply
   5,622.98x = 7,758.69 × 3,949.50
4. Step 4: Simplify right side
   5,622.98x = 30,642,946.16
5. Step 5: Solve for x
   x = 30,642,946.16/5,622.98
6. Step 6: Final answer
   x = 5,449.59