Finding the Fourth Proportional to 30,812.72, 42,517.88 and 17,383.19

Step by Step Solution

1. Step 1: Write the proportion equation
   30,812.72 : 42,517.88 = 17,383.19 : x
2. Step 2: Convert to fraction form
   30,812.72/42,517.88 = 17,383.19/x
3. Step 3: Cross multiply
   30,812.72x = 42,517.88 × 17,383.19
4. Step 4: Simplify right side
   30,812.72x = 739,096,217.31
5. Step 5: Solve for x
   x = 739,096,217.31/30,812.72
6. Step 6: Final answer
   x = 23,986.73