Finding the Fourth Proportional to 30,782.69, 42,480.09 and 16,635.53

Step by Step Solution

1. Step 1: Write the proportion equation
   30,782.69 : 42,480.09 = 16,635.53 : x
2. Step 2: Convert to fraction form
   30,782.69/42,480.09 = 16,635.53/x
3. Step 3: Cross multiply
   30,782.69x = 42,480.09 × 16,635.53
4. Step 4: Simplify right side
   30,782.69x = 706,678,599.20
5. Step 5: Solve for x
   x = 706,678,599.20/30,782.69
6. Step 6: Final answer
   x = 22,957.02