Finding the Fourth Proportional to 12,063.78, 16,647.57 and 7,028.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,063.78 : 16,647.57 = 7,028.28 : x
2. Step 2: Convert to fraction form
   12,063.78/16,647.57 = 7,028.28/x
3. Step 3: Cross multiply
   12,063.78x = 16,647.57 × 7,028.28
4. Step 4: Simplify right side
   12,063.78x = 117,003,783.28
5. Step 5: Solve for x
   x = 117,003,783.28/12,063.78
6. Step 6: Final answer
   x = 9,698.77