Finding the Fourth Proportional to 8,185.47, 12,279.33 and 2,636.97

Step by Step Solution

1. Step 1: Write the proportion equation
   8,185.47 : 12,279.33 = 2,636.97 : x
2. Step 2: Convert to fraction form
   8,185.47/12,279.33 = 2,636.97/x
3. Step 3: Cross multiply
   8,185.47x = 12,279.33 × 2,636.97
4. Step 4: Simplify right side
   8,185.47x = 32,380,224.83
5. Step 5: Solve for x
   x = 32,380,224.83/8,185.47
6. Step 6: Final answer
   x = 3,955.82