Finding the Fourth Proportional to 16,667, 24,988.16 and 10,091.64

Step by Step Solution

1. Step 1: Write the proportion equation
   16,667 : 24,988.16 = 10,091.64 : x
2. Step 2: Convert to fraction form
   16,667/24,988.16 = 10,091.64/x
3. Step 3: Cross multiply
   16,667x = 24,988.16 × 10,091.64
4. Step 4: Simplify right side
   16,667x = 252,171,514.98
5. Step 5: Solve for x
   x = 252,171,514.98/16,667
6. Step 6: Final answer
   x = 15,129.99