Finding the Fourth Proportional to 28,300.29, 42,447.98 and 9,579.92

Step by Step Solution

1. Step 1: Write the proportion equation
   28,300.29 : 42,447.98 = 9,579.92 : x
2. Step 2: Convert to fraction form
   28,300.29/42,447.98 = 9,579.92/x
3. Step 3: Cross multiply
   28,300.29x = 42,447.98 × 9,579.92
4. Step 4: Simplify right side
   28,300.29x = 406,647,992.42
5. Step 5: Solve for x
   x = 406,647,992.42/28,300.29
6. Step 6: Final answer
   x = 14,369.04