Finding the Fourth Proportional to 30,817.82, 42,528.60 and 17,391.92

Step by Step Solution

1. Step 1: Write the proportion equation
   30,817.82 : 42,528.60 = 17,391.92 : x
2. Step 2: Convert to fraction form
   30,817.82/42,528.60 = 17,391.92/x
3. Step 3: Cross multiply
   30,817.82x = 42,528.60 × 17,391.92
4. Step 4: Simplify right side
   30,817.82x = 739,654,008.91
5. Step 5: Solve for x
   x = 739,654,008.91/30,817.82
6. Step 6: Final answer
   x = 24,000.85