Finding the Fourth Proportional to 11,081.81, 16,557.81 and 10,694.23

Step by Step Solution

1. Step 1: Write the proportion equation
   11,081.81 : 16,557.81 = 10,694.23 : x
2. Step 2: Convert to fraction form
   11,081.81/16,557.81 = 10,694.23/x
3. Step 3: Cross multiply
   11,081.81x = 16,557.81 × 10,694.23
4. Step 4: Simplify right side
   11,081.81x = 177,072,945.65
5. Step 5: Solve for x
   x = 177,072,945.65/11,081.81
6. Step 6: Final answer
   x = 15,978.70