Finding the Fourth Proportional to 28,086.14, 42,096.81 and 10,544.78

Step by Step Solution

1. Step 1: Write the proportion equation
   28,086.14 : 42,096.81 = 10,544.78 : x
2. Step 2: Convert to fraction form
   28,086.14/42,096.81 = 10,544.78/x
3. Step 3: Cross multiply
   28,086.14x = 42,096.81 × 10,544.78
4. Step 4: Simplify right side
   28,086.14x = 443,901,600.15
5. Step 5: Solve for x
   x = 443,901,600.15/28,086.14
6. Step 6: Final answer
   x = 15,805.01