Finding the Fourth Proportional to 21,314.82, 31,972.50 and 8,167.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,314.82 : 31,972.50 = 8,167.98 : x
2. Step 2: Convert to fraction form
   21,314.82/31,972.50 = 8,167.98/x
3. Step 3: Cross multiply
   21,314.82x = 31,972.50 × 8,167.98
4. Step 4: Simplify right side
   21,314.82x = 261,150,740.55
5. Step 5: Solve for x
   x = 261,150,740.55/21,314.82
6. Step 6: Final answer
   x = 12,252.07