Finding the Fourth Proportional to 30,948.48, 42,705.96 and 17,520.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,948.48 : 42,705.96 = 17,520.72 : x
2. Step 2: Convert to fraction form
   30,948.48/42,705.96 = 17,520.72/x
3. Step 3: Cross multiply
   30,948.48x = 42,705.96 × 17,520.72
4. Step 4: Simplify right side
   30,948.48x = 748,239,167.49
5. Step 5: Solve for x
   x = 748,239,167.49/30,948.48
6. Step 6: Final answer
   x = 24,176.93