Finding the Fourth Proportional to 16,919.50, 23,359.50 and 10,872.19

Step by Step Solution

1. Step 1: Write the proportion equation
   16,919.50 : 23,359.50 = 10,872.19 : x
2. Step 2: Convert to fraction form
   16,919.50/23,359.50 = 10,872.19/x
3. Step 3: Cross multiply
   16,919.50x = 23,359.50 × 10,872.19
4. Step 4: Simplify right side
   16,919.50x = 253,968,922.31
5. Step 5: Solve for x
   x = 253,968,922.31/16,919.50
6. Step 6: Final answer
   x = 15,010.43