Finding the Fourth Proportional to 8,074.89, 12,039.81 and 7,766.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,074.89 : 12,039.81 = 7,766.58 : x
2. Step 2: Convert to fraction form
   8,074.89/12,039.81 = 7,766.58/x
3. Step 3: Cross multiply
   8,074.89x = 12,039.81 × 7,766.58
4. Step 4: Simplify right side
   8,074.89x = 93,508,229.10
5. Step 5: Solve for x
   x = 93,508,229.10/8,074.89
6. Step 6: Final answer
   x = 11,580.12