Finding the Fourth Proportional to 9,826.91, 14,740.38 and 8,091.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,826.91 : 14,740.38 = 8,091.89 : x
2. Step 2: Convert to fraction form
   9,826.91/14,740.38 = 8,091.89/x
3. Step 3: Cross multiply
   9,826.91x = 14,740.38 × 8,091.89
4. Step 4: Simplify right side
   9,826.91x = 119,277,459.82
5. Step 5: Solve for x
   x = 119,277,459.82/9,826.91
6. Step 6: Final answer
   x = 12,137.85