Finding the Fourth Proportional to 12,208.12, 18,312.72 and 3,443.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,208.12 : 18,312.72 = 3,443.68 : x
2. Step 2: Convert to fraction form
   12,208.12/18,312.72 = 3,443.68/x
3. Step 3: Cross multiply
   12,208.12x = 18,312.72 × 3,443.68
4. Step 4: Simplify right side
   12,208.12x = 63,063,147.61
5. Step 5: Solve for x
   x = 63,063,147.61/12,208.12
6. Step 6: Final answer
   x = 5,165.67