Finding the Fourth Proportional to 16,749.50, 23,133.75 and 11,150.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,749.50 : 23,133.75 = 11,150.78 : x
2. Step 2: Convert to fraction form
   16,749.50/23,133.75 = 11,150.78/x
3. Step 3: Cross multiply
   16,749.50x = 23,133.75 × 11,150.78
4. Step 4: Simplify right side
   16,749.50x = 257,959,356.83
5. Step 5: Solve for x
   x = 257,959,356.83/16,749.50
6. Step 6: Final answer
   x = 15,401.02