Finding the Fourth Proportional to 28,049.06, 42,071.92 and 10,517.42

Step by Step Solution

1. Step 1: Write the proportion equation
   28,049.06 : 42,071.92 = 10,517.42 : x
2. Step 2: Convert to fraction form
   28,049.06/42,071.92 = 10,517.42/x
3. Step 3: Cross multiply
   28,049.06x = 42,071.92 × 10,517.42
4. Step 4: Simplify right side
   28,049.06x = 442,488,052.85
5. Step 5: Solve for x
   x = 442,488,052.85/28,049.06
6. Step 6: Final answer
   x = 15,775.50