Finding the Fourth Proportional to 12,463.28, 17,164.33 and 12,191.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,463.28 : 17,164.33 = 12,191.12 : x
2. Step 2: Convert to fraction form
   12,463.28/17,164.33 = 12,191.12/x
3. Step 3: Cross multiply
   12,463.28x = 17,164.33 × 12,191.12
4. Step 4: Simplify right side
   12,463.28x = 209,252,290.45
5. Step 5: Solve for x
   x = 209,252,290.45/12,463.28
6. Step 6: Final answer
   x = 16,789.51