Finding the Fourth Proportional to 6,680.72, 9,219.72 and 4,028.98

Step by Step Solution

1. Step 1: Write the proportion equation
   6,680.72 : 9,219.72 = 4,028.98 : x
2. Step 2: Convert to fraction form
   6,680.72/9,219.72 = 4,028.98/x
3. Step 3: Cross multiply
   6,680.72x = 9,219.72 × 4,028.98
4. Step 4: Simplify right side
   6,680.72x = 37,146,067.49
5. Step 5: Solve for x
   x = 37,146,067.49/6,680.72
6. Step 6: Final answer
   x = 5,560.19