Finding the Fourth Proportional to 30,949.48, 42,707.34 and 17,521.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,949.48 : 42,707.34 = 17,521.72 : x
2. Step 2: Convert to fraction form
   30,949.48/42,707.34 = 17,521.72/x
3. Step 3: Cross multiply
   30,949.48x = 42,707.34 × 17,521.72
4. Step 4: Simplify right side
   30,949.48x = 748,306,053.42
5. Step 5: Solve for x
   x = 748,306,053.42/30,949.48
6. Step 6: Final answer
   x = 24,178.31