Finding the Fourth Proportional to 20,574.17, 30,855.86 and 7,424.09

Step by Step Solution

1. Step 1: Write the proportion equation
   20,574.17 : 30,855.86 = 7,424.09 : x
2. Step 2: Convert to fraction form
   20,574.17/30,855.86 = 7,424.09/x
3. Step 3: Cross multiply
   20,574.17x = 30,855.86 × 7,424.09
4. Step 4: Simplify right side
   20,574.17x = 229,076,644.55
5. Step 5: Solve for x
   x = 229,076,644.55/20,574.17
6. Step 6: Final answer
   x = 11,134.19