Finding the Fourth Proportional to 10,390.28, 15,581.77 and 4,842.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,390.28 : 15,581.77 = 4,842.59 : x
2. Step 2: Convert to fraction form
   10,390.28/15,581.77 = 4,842.59/x
3. Step 3: Cross multiply
   10,390.28x = 15,581.77 × 4,842.59
4. Step 4: Simplify right side
   10,390.28x = 75,456,033.57
5. Step 5: Solve for x
   x = 75,456,033.57/10,390.28
6. Step 6: Final answer
   x = 7,262.18