Finding the Fourth Proportional to 17,724.94, 24,435.92 and 12,680.34

Step by Step Solution

1. Step 1: Write the proportion equation
   17,724.94 : 24,435.92 = 12,680.34 : x
2. Step 2: Convert to fraction form
   17,724.94/24,435.92 = 12,680.34/x
3. Step 3: Cross multiply
   17,724.94x = 24,435.92 × 12,680.34
4. Step 4: Simplify right side
   17,724.94x = 309,855,773.81
5. Step 5: Solve for x
   x = 309,855,773.81/17,724.94
6. Step 6: Final answer
   x = 17,481.34