Finding the Fourth Proportional to 8,638.03, 12,962.31 and 3,443.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,638.03 : 12,962.31 = 3,443.50 : x
2. Step 2: Convert to fraction form
   8,638.03/12,962.31 = 3,443.50/x
3. Step 3: Cross multiply
   8,638.03x = 12,962.31 × 3,443.50
4. Step 4: Simplify right side
   8,638.03x = 44,635,714.49
5. Step 5: Solve for x
   x = 44,635,714.49/8,638.03
6. Step 6: Final answer
   x = 5,167.35