Finding the Fourth Proportional to 8,776.56, 12,111.57 and 4,797.63

Step by Step Solution

1. Step 1: Write the proportion equation
   8,776.56 : 12,111.57 = 4,797.63 : x
2. Step 2: Convert to fraction form
   8,776.56/12,111.57 = 4,797.63/x
3. Step 3: Cross multiply
   8,776.56x = 12,111.57 × 4,797.63
4. Step 4: Simplify right side
   8,776.56x = 58,106,831.58
5. Step 5: Solve for x
   x = 58,106,831.58/8,776.56
6. Step 6: Final answer
   x = 6,620.68