Finding the Fourth Proportional to 31,728.34, 43,775.22 and 18,297.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,728.34 : 43,775.22 = 18,297.82 : x
2. Step 2: Convert to fraction form
   31,728.34/43,775.22 = 18,297.82/x
3. Step 3: Cross multiply
   31,728.34x = 43,775.22 × 18,297.82
4. Step 4: Simplify right side
   31,728.34x = 800,991,096.02
5. Step 5: Solve for x
   x = 800,991,096.02/31,728.34
6. Step 6: Final answer
   x = 25,245.29