Finding the Fourth Proportional to 17,679.72, 24,398.64 and 9,722.55

Step by Step Solution

1. Step 1: Write the proportion equation
   17,679.72 : 24,398.64 = 9,722.55 : x
2. Step 2: Convert to fraction form
   17,679.72/24,398.64 = 9,722.55/x
3. Step 3: Cross multiply
   17,679.72x = 24,398.64 × 9,722.55
4. Step 4: Simplify right side
   17,679.72x = 237,216,997.33
5. Step 5: Solve for x
   x = 237,216,997.33/17,679.72
6. Step 6: Final answer
   x = 13,417.46