Finding the Fourth Proportional to 8,321.36, 12,482.30 and 3,638.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,321.36 : 12,482.30 = 3,638.96 : x
2. Step 2: Convert to fraction form
   8,321.36/12,482.30 = 3,638.96/x
3. Step 3: Cross multiply
   8,321.36x = 12,482.30 × 3,638.96
4. Step 4: Simplify right side
   8,321.36x = 45,422,636.56
5. Step 5: Solve for x
   x = 45,422,636.56/8,321.36
6. Step 6: Final answer
   x = 5,458.56