Finding the Fourth Proportional to 10,665.54, 16,000.68 and 4,091.73

Step by Step Solution

1. Step 1: Write the proportion equation
   10,665.54 : 16,000.68 = 4,091.73 : x
2. Step 2: Convert to fraction form
   10,665.54/16,000.68 = 4,091.73/x
3. Step 3: Cross multiply
   10,665.54x = 16,000.68 × 4,091.73
4. Step 4: Simplify right side
   10,665.54x = 65,470,462.38
5. Step 5: Solve for x
   x = 65,470,462.38/10,665.54
6. Step 6: Final answer
   x = 6,138.50