Finding the Fourth Proportional to 9,979.29, 14,967.72 and 3,406.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,979.29 : 14,967.72 = 3,406.14 : x
2. Step 2: Convert to fraction form
   9,979.29/14,967.72 = 3,406.14/x
3. Step 3: Cross multiply
   9,979.29x = 14,967.72 × 3,406.14
4. Step 4: Simplify right side
   9,979.29x = 50,982,149.80
5. Step 5: Solve for x
   x = 50,982,149.80/9,979.29
6. Step 6: Final answer
   x = 5,108.80