Finding the Fourth Proportional to 20,245.42, 27,956.27 and 12,704.83

Step by Step Solution

1. Step 1: Write the proportion equation
   20,245.42 : 27,956.27 = 12,704.83 : x
2. Step 2: Convert to fraction form
   20,245.42/27,956.27 = 12,704.83/x
3. Step 3: Cross multiply
   20,245.42x = 27,956.27 × 12,704.83
4. Step 4: Simplify right side
   20,245.42x = 355,179,657.78
5. Step 5: Solve for x
   x = 355,179,657.78/20,245.42
6. Step 6: Final answer
   x = 17,543.70