Finding the Fourth Proportional to 8,890.48, 12,268.56 and 4,911.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,890.48 : 12,268.56 = 4,911.76 : x
2. Step 2: Convert to fraction form
   8,890.48/12,268.56 = 4,911.76/x
3. Step 3: Cross multiply
   8,890.48x = 12,268.56 × 4,911.76
4. Step 4: Simplify right side
   8,890.48x = 60,260,222.27
5. Step 5: Solve for x
   x = 60,260,222.27/8,890.48
6. Step 6: Final answer
   x = 6,778.06