Finding the Fourth Proportional to 17,724.56, 24,426.25 and 12,680.03

Step by Step Solution

1. Step 1: Write the proportion equation
   17,724.56 : 24,426.25 = 12,680.03 : x
2. Step 2: Convert to fraction form
   17,724.56/24,426.25 = 12,680.03/x
3. Step 3: Cross multiply
   17,724.56x = 24,426.25 × 12,680.03
4. Step 4: Simplify right side
   17,724.56x = 309,725,582.79
5. Step 5: Solve for x
   x = 309,725,582.79/17,724.56
6. Step 6: Final answer
   x = 17,474.37