Finding the Fourth Proportional to 30,969.73, 42,738.20 and 16,822.48

Step by Step Solution

1. Step 1: Write the proportion equation
   30,969.73 : 42,738.20 = 16,822.48 : x
2. Step 2: Convert to fraction form
   30,969.73/42,738.20 = 16,822.48/x
3. Step 3: Cross multiply
   30,969.73x = 42,738.20 × 16,822.48
4. Step 4: Simplify right side
   30,969.73x = 718,962,216.93
5. Step 5: Solve for x
   x = 718,962,216.93/30,969.73
6. Step 6: Final answer
   x = 23,215.00