Finding the Fourth Proportional to 19,255.10, 28,891.83 and 10,489.82

Step by Step Solution

1. Step 1: Write the proportion equation
   19,255.10 : 28,891.83 = 10,489.82 : x
2. Step 2: Convert to fraction form
   19,255.10/28,891.83 = 10,489.82/x
3. Step 3: Cross multiply
   19,255.10x = 28,891.83 × 10,489.82
4. Step 4: Simplify right side
   19,255.10x = 303,069,951.71
5. Step 5: Solve for x
   x = 303,069,951.71/19,255.10
6. Step 6: Final answer
   x = 15,739.73