Finding the Fourth Proportional to 30,783.56, 42,481.34 and 16,636.41

Step by Step Solution

1. Step 1: Write the proportion equation
   30,783.56 : 42,481.34 = 16,636.41 : x
2. Step 2: Convert to fraction form
   30,783.56/42,481.34 = 16,636.41/x
3. Step 3: Cross multiply
   30,783.56x = 42,481.34 × 16,636.41
4. Step 4: Simplify right side
   30,783.56x = 706,736,906.41
5. Step 5: Solve for x
   x = 706,736,906.41/30,783.56
6. Step 6: Final answer
   x = 22,958.26