Finding the Fourth Proportional to 30,721.74, 42,395.52 and 17,292.96

Step by Step Solution

1. Step 1: Write the proportion equation
   30,721.74 : 42,395.52 = 17,292.96 : x
2. Step 2: Convert to fraction form
   30,721.74/42,395.52 = 17,292.96/x
3. Step 3: Cross multiply
   30,721.74x = 42,395.52 × 17,292.96
4. Step 4: Simplify right side
   30,721.74x = 733,144,031.54
5. Step 5: Solve for x
   x = 733,144,031.54/30,721.74
6. Step 6: Final answer
   x = 23,864.01