Finding the Fourth Proportional to 30,643.53, 42,284.76 and 17,216.28

Step by Step Solution

1. Step 1: Write the proportion equation
   30,643.53 : 42,284.76 = 17,216.28 : x
2. Step 2: Convert to fraction form
   30,643.53/42,284.76 = 17,216.28/x
3. Step 3: Cross multiply
   30,643.53x = 42,284.76 × 17,216.28
4. Step 4: Simplify right side
   30,643.53x = 727,986,267.89
5. Step 5: Solve for x
   x = 727,986,267.89/30,643.53
6. Step 6: Final answer
   x = 23,756.61