Finding the Fourth Proportional to 30,966.50, 42,733.98 and 16,819.34

Step by Step Solution

1. Step 1: Write the proportion equation
   30,966.50 : 42,733.98 = 16,819.34 : x
2. Step 2: Convert to fraction form
   30,966.50/42,733.98 = 16,819.34/x
3. Step 3: Cross multiply
   30,966.50x = 42,733.98 × 16,819.34
4. Step 4: Simplify right side
   30,966.50x = 718,757,339.17
5. Step 5: Solve for x
   x = 718,757,339.17/30,966.50
6. Step 6: Final answer
   x = 23,210.80