Finding the Fourth Proportional to 16,017.42, 23,991.03 and 13,212.48

Step by Step Solution

1. Step 1: Write the proportion equation
   16,017.42 : 23,991.03 = 13,212.48 : x
2. Step 2: Convert to fraction form
   16,017.42/23,991.03 = 13,212.48/x
3. Step 3: Cross multiply
   16,017.42x = 23,991.03 × 13,212.48
4. Step 4: Simplify right side
   16,017.42x = 316,981,004.05
5. Step 5: Solve for x
   x = 316,981,004.05/16,017.42
6. Step 6: Final answer
   x = 19,789.77