Finding the Fourth Proportional to 30,649.98, 42,297 and 17,221.24

Step by Step Solution

1. Step 1: Write the proportion equation
   30,649.98 : 42,297 = 17,221.24 : x
2. Step 2: Convert to fraction form
   30,649.98/42,297 = 17,221.24/x
3. Step 3: Cross multiply
   30,649.98x = 42,297 × 17,221.24
4. Step 4: Simplify right side
   30,649.98x = 728,406,788.28
5. Step 5: Solve for x
   x = 728,406,788.28/30,649.98
6. Step 6: Final answer
   x = 23,765.33