Finding the Fourth Proportional to 11,729.77, 16,185.59 and 9,345.79

Step by Step Solution

1. Step 1: Write the proportion equation
   11,729.77 : 16,185.59 = 9,345.79 : x
2. Step 2: Convert to fraction form
   11,729.77/16,185.59 = 9,345.79/x
3. Step 3: Cross multiply
   11,729.77x = 16,185.59 × 9,345.79
4. Step 4: Simplify right side
   11,729.77x = 151,267,133.72
5. Step 5: Solve for x
   x = 151,267,133.72/11,729.77
6. Step 6: Final answer
   x = 12,896.00