Finding the Fourth Proportional to 30,667.77, 42,321.92 and 17,238.24

Step by Step Solution

1. Step 1: Write the proportion equation
   30,667.77 : 42,321.92 = 17,238.24 : x
2. Step 2: Convert to fraction form
   30,667.77/42,321.92 = 17,238.24/x
3. Step 3: Cross multiply
   30,667.77x = 42,321.92 × 17,238.24
4. Step 4: Simplify right side
   30,667.77x = 729,555,328.03
5. Step 5: Solve for x
   x = 729,555,328.03/30,667.77
6. Step 6: Final answer
   x = 23,788.99