Finding the Fourth Proportional to 16,717.89, 23,022.06 and 15,649.43

Step by Step Solution

1. Step 1: Write the proportion equation
   16,717.89 : 23,022.06 = 15,649.43 : x
2. Step 2: Convert to fraction form
   16,717.89/23,022.06 = 15,649.43/x
3. Step 3: Cross multiply
   16,717.89x = 23,022.06 × 15,649.43
4. Step 4: Simplify right side
   16,717.89x = 360,282,001.32
5. Step 5: Solve for x
   x = 360,282,001.32/16,717.89
6. Step 6: Final answer
   x = 21,550.69