Finding the Fourth Proportional to 12,222.18, 16,840.55 and 8,236.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,222.18 : 16,840.55 = 8,236.37 : x
2. Step 2: Convert to fraction form
   12,222.18/16,840.55 = 8,236.37/x
3. Step 3: Cross multiply
   12,222.18x = 16,840.55 × 8,236.37
4. Step 4: Simplify right side
   12,222.18x = 138,705,000.80
5. Step 5: Solve for x
   x = 138,705,000.80/12,222.18
6. Step 6: Final answer
   x = 11,348.63