Finding the Fourth Proportional to 16,109, 24,179.88 and 11,111.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,109 : 24,179.88 = 11,111.72 : x
2. Step 2: Convert to fraction form
   16,109/24,179.88 = 11,111.72/x
3. Step 3: Cross multiply
   16,109x = 24,179.88 × 11,111.72
4. Step 4: Simplify right side
   16,109x = 268,680,056.19
5. Step 5: Solve for x
   x = 268,680,056.19/16,109
6. Step 6: Final answer
   x = 16,678.88