Finding the Fourth Proportional to 13,776.24, 18,981.72 and 12,084.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,776.24 : 18,981.72 = 12,084.72 : x
2. Step 2: Convert to fraction form
   13,776.24/18,981.72 = 12,084.72/x
3. Step 3: Cross multiply
   13,776.24x = 18,981.72 × 12,084.72
4. Step 4: Simplify right side
   13,776.24x = 229,388,771.32
5. Step 5: Solve for x
   x = 229,388,771.32/13,776.24
6. Step 6: Final answer
   x = 16,651.04