Finding the Fourth Proportional to 30,839.99, 42,556.80 and 17,412.57

Step by Step Solution

1. Step 1: Write the proportion equation
   30,839.99 : 42,556.80 = 17,412.57 : x
2. Step 2: Convert to fraction form
   30,839.99/42,556.80 = 17,412.57/x
3. Step 3: Cross multiply
   30,839.99x = 42,556.80 × 17,412.57
4. Step 4: Simplify right side
   30,839.99x = 741,023,275.30
5. Step 5: Solve for x
   x = 741,023,275.30/30,839.99
6. Step 6: Final answer
   x = 24,028.00