Finding the Fourth Proportional to 6,453.72, 9,680.56 and 3,641.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,453.72 : 9,680.56 = 3,641.28 : x
2. Step 2: Convert to fraction form
   6,453.72/9,680.56 = 3,641.28/x
3. Step 3: Cross multiply
   6,453.72x = 9,680.56 × 3,641.28
4. Step 4: Simplify right side
   6,453.72x = 35,249,620.41
5. Step 5: Solve for x
   x = 35,249,620.41/6,453.72
6. Step 6: Final answer
   x = 5,461.91