Finding the Fourth Proportional to 20,655.27, 30,958.25 and 10,789.16

Step by Step Solution

1. Step 1: Write the proportion equation
   20,655.27 : 30,958.25 = 10,789.16 : x
2. Step 2: Convert to fraction form
   20,655.27/30,958.25 = 10,789.16/x
3. Step 3: Cross multiply
   20,655.27x = 30,958.25 × 10,789.16
4. Step 4: Simplify right side
   20,655.27x = 334,013,303.83
5. Step 5: Solve for x
   x = 334,013,303.83/20,655.27
6. Step 6: Final answer
   x = 16,170.85