Finding the Fourth Proportional to 19,714.29, 29,574.78 and 8,620.73

Step by Step Solution

1. Step 1: Write the proportion equation
   19,714.29 : 29,574.78 = 8,620.73 : x
2. Step 2: Convert to fraction form
   19,714.29/29,574.78 = 8,620.73/x
3. Step 3: Cross multiply
   19,714.29x = 29,574.78 × 8,620.73
4. Step 4: Simplify right side
   19,714.29x = 254,956,234.80
5. Step 5: Solve for x
   x = 254,956,234.80/19,714.29
6. Step 6: Final answer
   x = 12,932.56