Finding the Fourth Proportional to 31,723.48, 43,796.10 and 21,667

Step by Step Solution

1. Step 1: Write the proportion equation
   31,723.48 : 43,796.10 = 21,667 : x
2. Step 2: Convert to fraction form
   31,723.48/43,796.10 = 21,667/x
3. Step 3: Cross multiply
   31,723.48x = 43,796.10 × 21,667
4. Step 4: Simplify right side
   31,723.48x = 948,930,098.70
5. Step 5: Solve for x
   x = 948,930,098.70/31,723.48
6. Step 6: Final answer
   x = 29,912.55