Finding the Fourth Proportional to 16,857.69, 23,259.57 and 10,888.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,857.69 : 23,259.57 = 10,888.34 : x
2. Step 2: Convert to fraction form
   16,857.69/23,259.57 = 10,888.34/x
3. Step 3: Cross multiply
   16,857.69x = 23,259.57 × 10,888.34
4. Step 4: Simplify right side
   16,857.69x = 253,257,990.12
5. Step 5: Solve for x
   x = 253,257,990.12/16,857.69
6. Step 6: Final answer
   x = 15,023.29