Finding the Fourth Proportional to 22,111.10, 33,167 and 12,312.68

Step by Step Solution

1. Step 1: Write the proportion equation
   22,111.10 : 33,167 = 12,312.68 : x
2. Step 2: Convert to fraction form
   22,111.10/33,167 = 12,312.68/x
3. Step 3: Cross multiply
   22,111.10x = 33,167 × 12,312.68
4. Step 4: Simplify right side
   22,111.10x = 408,374,657.56
5. Step 5: Solve for x
   x = 408,374,657.56/22,111.10
6. Step 6: Final answer
   x = 18,469.21