Finding the Fourth Proportional to 8,796.66, 12,139.39 and 4,817.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,796.66 : 12,139.39 = 4,817.78 : x
2. Step 2: Convert to fraction form
   8,796.66/12,139.39 = 4,817.78/x
3. Step 3: Cross multiply
   8,796.66x = 12,139.39 × 4,817.78
4. Step 4: Simplify right side
   8,796.66x = 58,484,940.70
5. Step 5: Solve for x
   x = 58,484,940.70/8,796.66
6. Step 6: Final answer
   x = 6,648.54