Finding the Fourth Proportional to 30,983.55, 42,756.15 and 16,836.09

Step by Step Solution

1. Step 1: Write the proportion equation
   30,983.55 : 42,756.15 = 16,836.09 : x
2. Step 2: Convert to fraction form
   30,983.55/42,756.15 = 16,836.09/x
3. Step 3: Cross multiply
   30,983.55x = 42,756.15 × 16,836.09
4. Step 4: Simplify right side
   30,983.55x = 719,846,389.45
5. Step 5: Solve for x
   x = 719,846,389.45/30,983.55
6. Step 6: Final answer
   x = 23,233.18