Finding the Fourth Proportional to 30,933.50, 42,688.34 and 16,786.34

Step by Step Solution

1. Step 1: Write the proportion equation
   30,933.50 : 42,688.34 = 16,786.34 : x
2. Step 2: Convert to fraction form
   30,933.50/42,688.34 = 16,786.34/x
3. Step 3: Cross multiply
   30,933.50x = 42,688.34 × 16,786.34
4. Step 4: Simplify right side
   30,933.50x = 716,580,691.90
5. Step 5: Solve for x
   x = 716,580,691.90/30,933.50
6. Step 6: Final answer
   x = 23,165.20