Finding the Fourth Proportional to 11,799.06, 16,267.56 and 9,666.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,799.06 : 16,267.56 = 9,666.72 : x
2. Step 2: Convert to fraction form
   11,799.06/16,267.56 = 9,666.72/x
3. Step 3: Cross multiply
   11,799.06x = 16,267.56 × 9,666.72
4. Step 4: Simplify right side
   11,799.06x = 157,253,947.60
5. Step 5: Solve for x
   x = 157,253,947.60/11,799.06
6. Step 6: Final answer
   x = 13,327.67