Finding the Fourth Proportional to 9,666.37, 14,499.62 and 3,426.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,666.37 : 14,499.62 = 3,426.54 : x
2. Step 2: Convert to fraction form
   9,666.37/14,499.62 = 3,426.54/x
3. Step 3: Cross multiply
   9,666.37x = 14,499.62 × 3,426.54
4. Step 4: Simplify right side
   9,666.37x = 49,683,527.91
5. Step 5: Solve for x
   x = 49,683,527.91/9,666.37
6. Step 6: Final answer
   x = 5,139.83