Finding the Fourth Proportional to 10,315.69, 15,478.47 and 4,765.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,315.69 : 15,478.47 = 4,765.98 : x
2. Step 2: Convert to fraction form
   10,315.69/15,478.47 = 4,765.98/x
3. Step 3: Cross multiply
   10,315.69x = 15,478.47 × 4,765.98
4. Step 4: Simplify right side
   10,315.69x = 73,770,078.45
5. Step 5: Solve for x
   x = 73,770,078.45/10,315.69
6. Step 6: Final answer
   x = 7,151.25