Finding the Fourth Proportional to 8,642.52, 12,968.82 and 3,644.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,642.52 : 12,968.82 = 3,644.59 : x
2. Step 2: Convert to fraction form
   8,642.52/12,968.82 = 3,644.59/x
3. Step 3: Cross multiply
   8,642.52x = 12,968.82 × 3,644.59
4. Step 4: Simplify right side
   8,642.52x = 47,266,031.68
5. Step 5: Solve for x
   x = 47,266,031.68/8,642.52
6. Step 6: Final answer
   x = 5,469.01