Finding the Fourth Proportional to 30,451.52, 42,022.90 and 17,022.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,451.52 : 42,022.90 = 17,022.72 : x
2. Step 2: Convert to fraction form
   30,451.52/42,022.90 = 17,022.72/x
3. Step 3: Cross multiply
   30,451.52x = 42,022.90 × 17,022.72
4. Step 4: Simplify right side
   30,451.52x = 715,344,060.29
5. Step 5: Solve for x
   x = 715,344,060.29/30,451.52
6. Step 6: Final answer
   x = 23,491.24