Finding the Fourth Proportional to 30,651.98, 42,304.66 and 28,650.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,651.98 : 42,304.66 = 28,650.88 : x
2. Step 2: Convert to fraction form
   30,651.98/42,304.66 = 28,650.88/x
3. Step 3: Cross multiply
   30,651.98x = 42,304.66 × 28,650.88
4. Step 4: Simplify right side
   30,651.98x = 1,212,065,737.10
5. Step 5: Solve for x
   x = 1,212,065,737.10/30,651.98
6. Step 6: Final answer
   x = 39,542.82