Finding the Fourth Proportional to 6,648.36, 9,979.83 and 2,755.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,648.36 : 9,979.83 = 2,755.50 : x
2. Step 2: Convert to fraction form
   6,648.36/9,979.83 = 2,755.50/x
3. Step 3: Cross multiply
   6,648.36x = 9,979.83 × 2,755.50
4. Step 4: Simplify right side
   6,648.36x = 27,499,373.81
5. Step 5: Solve for x
   x = 27,499,373.81/6,648.36
6. Step 6: Final answer
   x = 4,136.27