Finding the Fourth Proportional to 17,723.56, 24,424.87 and 12,679.03

Step by Step Solution

1. Step 1: Write the proportion equation
   17,723.56 : 24,424.87 = 12,679.03 : x
2. Step 2: Convert to fraction form
   17,723.56/24,424.87 = 12,679.03/x
3. Step 3: Cross multiply
   17,723.56x = 24,424.87 × 12,679.03
4. Step 4: Simplify right side
   17,723.56x = 309,683,659.48
5. Step 5: Solve for x
   x = 309,683,659.48/17,723.56
6. Step 6: Final answer
   x = 17,472.99