Finding the Fourth Proportional to 8,768.21, 12,099.67 and 4,788.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,768.21 : 12,099.67 = 4,788.59 : x
2. Step 2: Convert to fraction form
   8,768.21/12,099.67 = 4,788.59/x
3. Step 3: Cross multiply
   8,768.21x = 12,099.67 × 4,788.59
4. Step 4: Simplify right side
   8,768.21x = 57,940,286.30
5. Step 5: Solve for x
   x = 57,940,286.30/8,768.21
6. Step 6: Final answer
   x = 6,608.00