Finding the Fourth Proportional to 8,747.76, 12,071.81 and 4,768.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,747.76 : 12,071.81 = 4,768.78 : x
2. Step 2: Convert to fraction form
   8,747.76/12,071.81 = 4,768.78/x
3. Step 3: Cross multiply
   8,747.76x = 12,071.81 × 4,768.78
4. Step 4: Simplify right side
   8,747.76x = 57,567,815.22
5. Step 5: Solve for x
   x = 57,567,815.22/8,747.76
6. Step 6: Final answer
   x = 6,580.87