Finding the Fourth Proportional to 28,333.98, 42,500.49 and 9,865.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,333.98 : 42,500.49 = 9,865.50 : x
2. Step 2: Convert to fraction form
   28,333.98/42,500.49 = 9,865.50/x
3. Step 3: Cross multiply
   28,333.98x = 42,500.49 × 9,865.50
4. Step 4: Simplify right side
   28,333.98x = 419,288,584.10
5. Step 5: Solve for x
   x = 419,288,584.10/28,333.98
6. Step 6: Final answer
   x = 14,798.08