Finding the Fourth Proportional to 10,665, 16,004.79 and 3,739.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,665 : 16,004.79 = 3,739.50 : x
2. Step 2: Convert to fraction form
   10,665/16,004.79 = 3,739.50/x
3. Step 3: Cross multiply
   10,665x = 16,004.79 × 3,739.50
4. Step 4: Simplify right side
   10,665x = 59,849,912.21
5. Step 5: Solve for x
   x = 59,849,912.21/10,665
6. Step 6: Final answer
   x = 5,611.81