Finding the Fourth Proportional to 12,171.50, 16,794.01 and 7,922.11

Step by Step Solution

1. Step 1: Write the proportion equation
   12,171.50 : 16,794.01 = 7,922.11 : x
2. Step 2: Convert to fraction form
   12,171.50/16,794.01 = 7,922.11/x
3. Step 3: Cross multiply
   12,171.50x = 16,794.01 × 7,922.11
4. Step 4: Simplify right side
   12,171.50x = 133,043,994.56
5. Step 5: Solve for x
   x = 133,043,994.56/12,171.50
6. Step 6: Final answer
   x = 10,930.78