Finding the Fourth Proportional to 30,783.26, 42,480.76 and 16,636.08

Step by Step Solution

1. Step 1: Write the proportion equation
   30,783.26 : 42,480.76 = 16,636.08 : x
2. Step 2: Convert to fraction form
   30,783.26/42,480.76 = 16,636.08/x
3. Step 3: Cross multiply
   30,783.26x = 42,480.76 × 16,636.08
4. Step 4: Simplify right side
   30,783.26x = 706,713,321.82
5. Step 5: Solve for x
   x = 706,713,321.82/30,783.26
6. Step 6: Final answer
   x = 22,957.72