Finding the Fourth Proportional to 28,049.60, 42,049.92 and 10,514.72

Step by Step Solution

1. Step 1: Write the proportion equation
   28,049.60 : 42,049.92 = 10,514.72 : x
2. Step 2: Convert to fraction form
   28,049.60/42,049.92 = 10,514.72/x
3. Step 3: Cross multiply
   28,049.60x = 42,049.92 × 10,514.72
4. Step 4: Simplify right side
   28,049.60x = 442,143,134.82
5. Step 5: Solve for x
   x = 442,143,134.82/28,049.60
6. Step 6: Final answer
   x = 15,762.90