Finding the Fourth Proportional to 16,505.69, 22,796.63 and 11,191.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,505.69 : 22,796.63 = 11,191.28 : x
2. Step 2: Convert to fraction form
   16,505.69/22,796.63 = 11,191.28/x
3. Step 3: Cross multiply
   16,505.69x = 22,796.63 × 11,191.28
4. Step 4: Simplify right side
   16,505.69x = 255,123,299.45
5. Step 5: Solve for x
   x = 255,123,299.45/16,505.69
6. Step 6: Final answer
   x = 15,456.69