Finding the Fourth Proportional to 30,965.37, 42,732.27 and 16,818.18

Step by Step Solution

1. Step 1: Write the proportion equation
   30,965.37 : 42,732.27 = 16,818.18 : x
2. Step 2: Convert to fraction form
   30,965.37/42,732.27 = 16,818.18/x
3. Step 3: Cross multiply
   30,965.37x = 42,732.27 × 16,818.18
4. Step 4: Simplify right side
   30,965.37x = 718,679,008.67
5. Step 5: Solve for x
   x = 718,679,008.67/30,965.37
6. Step 6: Final answer
   x = 23,209.12