Finding the Fourth Proportional to 20,029.49, 30,035.12 and 10,667.10

Step by Step Solution

1. Step 1: Write the proportion equation
   20,029.49 : 30,035.12 = 10,667.10 : x
2. Step 2: Convert to fraction form
   20,029.49/30,035.12 = 10,667.10/x
3. Step 3: Cross multiply
   20,029.49x = 30,035.12 × 10,667.10
4. Step 4: Simplify right side
   20,029.49x = 320,387,628.55
5. Step 5: Solve for x
   x = 320,387,628.55/20,029.49
6. Step 6: Final answer
   x = 15,995.80