Finding the Fourth Proportional to 6,628.78, 9,147.72 and 3,644.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,628.78 : 9,147.72 = 3,644.82 : x
2. Step 2: Convert to fraction form
   6,628.78/9,147.72 = 3,644.82/x
3. Step 3: Cross multiply
   6,628.78x = 9,147.72 × 3,644.82
4. Step 4: Simplify right side
   6,628.78x = 33,341,779.08
5. Step 5: Solve for x
   x = 33,341,779.08/6,628.78
6. Step 6: Final answer
   x = 5,029.85