Finding the Fourth Proportional to 11,796.72, 16,273.35 and 9,561.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,796.72 : 16,273.35 = 9,561.12 : x
2. Step 2: Convert to fraction form
   11,796.72/16,273.35 = 9,561.12/x
3. Step 3: Cross multiply
   11,796.72x = 16,273.35 × 9,561.12
4. Step 4: Simplify right side
   11,796.72x = 155,591,452.15
5. Step 5: Solve for x
   x = 155,591,452.15/11,796.72
6. Step 6: Final answer
   x = 13,189.38