Finding the Fourth Proportional to 10,514.46, 15,760.71 and 4,278.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,514.46 : 15,760.71 = 4,278.81 : x
2. Step 2: Convert to fraction form
   10,514.46/15,760.71 = 4,278.81/x
3. Step 3: Cross multiply
   10,514.46x = 15,760.71 × 4,278.81
4. Step 4: Simplify right side
   10,514.46x = 67,437,083.56
5. Step 5: Solve for x
   x = 67,437,083.56/10,514.46
6. Step 6: Final answer
   x = 6,413.75