Finding the Fourth Proportional to 16,738.74, 23,076.36 and 16,221.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,738.74 : 23,076.36 = 16,221.15 : x
2. Step 2: Convert to fraction form
   16,738.74/23,076.36 = 16,221.15/x
3. Step 3: Cross multiply
   16,738.74x = 23,076.36 × 16,221.15
4. Step 4: Simplify right side
   16,738.74x = 374,325,097.01
5. Step 5: Solve for x
   x = 374,325,097.01/16,738.74
6. Step 6: Final answer
   x = 22,362.80