Finding the Fourth Proportional to 8,317.34, 12,479.90 and 3,636.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,317.34 : 12,479.90 = 3,636.74 : x
2. Step 2: Convert to fraction form
   8,317.34/12,479.90 = 3,636.74/x
3. Step 3: Cross multiply
   8,317.34x = 12,479.90 × 3,636.74
4. Step 4: Simplify right side
   8,317.34x = 45,386,151.53
5. Step 5: Solve for x
   x = 45,386,151.53/8,317.34
6. Step 6: Final answer
   x = 5,456.81