Finding the Fourth Proportional to 20,367, 30,522.76 and 10,485.41

Step by Step Solution

1. Step 1: Write the proportion equation
   20,367 : 30,522.76 = 10,485.41 : x
2. Step 2: Convert to fraction form
   20,367/30,522.76 = 10,485.41/x
3. Step 3: Cross multiply
   20,367x = 30,522.76 × 10,485.41
4. Step 4: Simplify right side
   20,367x = 320,043,474.10
5. Step 5: Solve for x
   x = 320,043,474.10/20,367
6. Step 6: Final answer
   x = 15,713.83