Finding the Fourth Proportional to 8,767.82, 12,099.60 and 4,789

Step by Step Solution

1. Step 1: Write the proportion equation
   8,767.82 : 12,099.60 = 4,789 : x
2. Step 2: Convert to fraction form
   8,767.82/12,099.60 = 4,789/x
3. Step 3: Cross multiply
   8,767.82x = 12,099.60 × 4,789
4. Step 4: Simplify right side
   8,767.82x = 57,944,984.40
5. Step 5: Solve for x
   x = 57,944,984.40/8,767.82
6. Step 6: Final answer
   x = 6,608.82