Finding the Fourth Proportional to 21,114.76, 31,677.61 and 7,967.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,114.76 : 31,677.61 = 7,967.25 : x
2. Step 2: Convert to fraction form
   21,114.76/31,677.61 = 7,967.25/x
3. Step 3: Cross multiply
   21,114.76x = 31,677.61 × 7,967.25
4. Step 4: Simplify right side
   21,114.76x = 252,383,438.27
5. Step 5: Solve for x
   x = 252,383,438.27/21,114.76
6. Step 6: Final answer
   x = 11,952.94