Finding the Fourth Proportional to 21,756.82, 30,021.74 and 12,194.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,756.82 : 30,021.74 = 12,194.50 : x
2. Step 2: Convert to fraction form
   21,756.82/30,021.74 = 12,194.50/x
3. Step 3: Cross multiply
   21,756.82x = 30,021.74 × 12,194.50
4. Step 4: Simplify right side
   21,756.82x = 366,100,074.42
5. Step 5: Solve for x
   x = 366,100,074.42/21,756.82
6. Step 6: Final answer
   x = 16,826.91