Finding the Fourth Proportional to 30,628.72, 42,269.24 and 17,199.28

Step by Step Solution

1. Step 1: Write the proportion equation
   30,628.72 : 42,269.24 = 17,199.28 : x
2. Step 2: Convert to fraction form
   30,628.72/42,269.24 = 17,199.28/x
3. Step 3: Cross multiply
   30,628.72x = 42,269.24 × 17,199.28
4. Step 4: Simplify right side
   30,628.72x = 727,000,494.15
5. Step 5: Solve for x
   x = 727,000,494.15/30,628.72
6. Step 6: Final answer
   x = 23,735.91