Finding the Fourth Proportional to 11,426.15, 17,091.83 and 10,726.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,426.15 : 17,091.83 = 10,726.31 : x
2. Step 2: Convert to fraction form
   11,426.15/17,091.83 = 10,726.31/x
3. Step 3: Cross multiply
   11,426.15x = 17,091.83 × 10,726.31
4. Step 4: Simplify right side
   11,426.15x = 183,332,336.59
5. Step 5: Solve for x
   x = 183,332,336.59/11,426.15
6. Step 6: Final answer
   x = 16,044.98