Finding the Fourth Proportional to 21,745.96, 30,015.33 and 12,796.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,745.96 : 30,015.33 = 12,796.34 : x
2. Step 2: Convert to fraction form
   21,745.96/30,015.33 = 12,796.34/x
3. Step 3: Cross multiply
   21,745.96x = 30,015.33 × 12,796.34
4. Step 4: Simplify right side
   21,745.96x = 384,086,367.89
5. Step 5: Solve for x
   x = 384,086,367.89/21,745.96
6. Step 6: Final answer
   x = 17,662.42