Finding the Fourth Proportional to 8,760.50, 12,089.49 and 5,620.94

Step by Step Solution

1. Step 1: Write the proportion equation
   8,760.50 : 12,089.49 = 5,620.94 : x
2. Step 2: Convert to fraction form
   8,760.50/12,089.49 = 5,620.94/x
3. Step 3: Cross multiply
   8,760.50x = 12,089.49 × 5,620.94
4. Step 4: Simplify right side
   8,760.50x = 67,954,297.92
5. Step 5: Solve for x
   x = 67,954,297.92/8,760.50
6. Step 6: Final answer
   x = 7,756.90