Finding the Fourth Proportional to 12,768.48, 17,622.72 and 8,055.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,768.48 : 17,622.72 = 8,055.36 : x
2. Step 2: Convert to fraction form
   12,768.48/17,622.72 = 8,055.36/x
3. Step 3: Cross multiply
   12,768.48x = 17,622.72 × 8,055.36
4. Step 4: Simplify right side
   12,768.48x = 141,957,353.78
5. Step 5: Solve for x
   x = 141,957,353.78/12,768.48
6. Step 6: Final answer
   x = 11,117.80