Finding the Fourth Proportional to 30,577.84, 42,197.50 and 17,839.78

Step by Step Solution

1. Step 1: Write the proportion equation
   30,577.84 : 42,197.50 = 17,839.78 : x
2. Step 2: Convert to fraction form
   30,577.84/42,197.50 = 17,839.78/x
3. Step 3: Cross multiply
   30,577.84x = 42,197.50 × 17,839.78
4. Step 4: Simplify right side
   30,577.84x = 752,794,116.55
5. Step 5: Solve for x
   x = 752,794,116.55/30,577.84
6. Step 6: Final answer
   x = 24,618.94