Finding the Fourth Proportional to 13,722.06, 18,922.56 and 12,204.83

Step by Step Solution

1. Step 1: Write the proportion equation
   13,722.06 : 18,922.56 = 12,204.83 : x
2. Step 2: Convert to fraction form
   13,722.06/18,922.56 = 12,204.83/x
3. Step 3: Cross multiply
   13,722.06x = 18,922.56 × 12,204.83
4. Step 4: Simplify right side
   13,722.06x = 230,946,591.72
5. Step 5: Solve for x
   x = 230,946,591.72/13,722.06
6. Step 6: Final answer
   x = 16,830.32