Finding the Fourth Proportional to 8,429.22, 12,636.69 and 3,495.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,429.22 : 12,636.69 = 3,495.78 : x
2. Step 2: Convert to fraction form
   8,429.22/12,636.69 = 3,495.78/x
3. Step 3: Cross multiply
   8,429.22x = 12,636.69 × 3,495.78
4. Step 4: Simplify right side
   8,429.22x = 44,175,088.17
5. Step 5: Solve for x
   x = 44,175,088.17/8,429.22
6. Step 6: Final answer
   x = 5,240.71