Finding the Fourth Proportional to 30,915.27, 42,662.43 and 17,487.09

Step by Step Solution

1. Step 1: Write the proportion equation
   30,915.27 : 42,662.43 = 17,487.09 : x
2. Step 2: Convert to fraction form
   30,915.27/42,662.43 = 17,487.09/x
3. Step 3: Cross multiply
   30,915.27x = 42,662.43 × 17,487.09
4. Step 4: Simplify right side
   30,915.27x = 746,041,753.03
5. Step 5: Solve for x
   x = 746,041,753.03/30,915.27
6. Step 6: Final answer
   x = 24,131.82