Finding the Fourth Proportional to 10,826.76, 16,208.46 and 9,789.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,826.76 : 16,208.46 = 9,789.15 : x
2. Step 2: Convert to fraction form
   10,826.76/16,208.46 = 9,789.15/x
3. Step 3: Cross multiply
   10,826.76x = 16,208.46 × 9,789.15
4. Step 4: Simplify right side
   10,826.76x = 158,667,046.21
5. Step 5: Solve for x
   x = 158,667,046.21/10,826.76
6. Step 6: Final answer
   x = 14,655.08