Finding the Fourth Proportional to 28,414.82, 42,613.59 and 9,942.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,414.82 : 42,613.59 = 9,942.50 : x
2. Step 2: Convert to fraction form
   28,414.82/42,613.59 = 9,942.50/x
3. Step 3: Cross multiply
   28,414.82x = 42,613.59 × 9,942.50
4. Step 4: Simplify right side
   28,414.82x = 423,685,618.58
5. Step 5: Solve for x
   x = 423,685,618.58/28,414.82
6. Step 6: Final answer
   x = 14,910.73