Finding the Fourth Proportional to 30,729.42, 42,408.50 and 17,982.86

Step by Step Solution

1. Step 1: Write the proportion equation
   30,729.42 : 42,408.50 = 17,982.86 : x
2. Step 2: Convert to fraction form
   30,729.42/42,408.50 = 17,982.86/x
3. Step 3: Cross multiply
   30,729.42x = 42,408.50 × 17,982.86
4. Step 4: Simplify right side
   30,729.42x = 762,625,816.35
5. Step 5: Solve for x
   x = 762,625,816.35/30,729.42
6. Step 6: Final answer
   x = 24,817.45