Finding the Fourth Proportional to 10,570.14, 15,843.27 and 5,015.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,570.14 : 15,843.27 = 5,015.78 : x
2. Step 2: Convert to fraction form
   10,570.14/15,843.27 = 5,015.78/x
3. Step 3: Cross multiply
   10,570.14x = 15,843.27 × 5,015.78
4. Step 4: Simplify right side
   10,570.14x = 79,466,356.80
5. Step 5: Solve for x
   x = 79,466,356.80/10,570.14
6. Step 6: Final answer
   x = 7,518.00