Finding the Fourth Proportional to 30,817.50, 42,528.15 and 17,569.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,817.50 : 42,528.15 = 17,569.50 : x
2. Step 2: Convert to fraction form
   30,817.50/42,528.15 = 17,569.50/x
3. Step 3: Cross multiply
   30,817.50x = 42,528.15 × 17,569.50
4. Step 4: Simplify right side
   30,817.50x = 747,198,331.43
5. Step 5: Solve for x
   x = 747,198,331.43/30,817.50
6. Step 6: Final answer
   x = 24,245.91