Finding the Fourth Proportional to 16,698.52, 23,043.70 and 9,144.79

Step by Step Solution

1. Step 1: Write the proportion equation
   16,698.52 : 23,043.70 = 9,144.79 : x
2. Step 2: Convert to fraction form
   16,698.52/23,043.70 = 9,144.79/x
3. Step 3: Cross multiply
   16,698.52x = 23,043.70 × 9,144.79
4. Step 4: Simplify right side
   16,698.52x = 210,729,797.32
5. Step 5: Solve for x
   x = 210,729,797.32/16,698.52
6. Step 6: Final answer
   x = 12,619.67