Finding the Fourth Proportional to 10,007.28, 13,812.57 and 5,760.45

Step by Step Solution

1. Step 1: Write the proportion equation
   10,007.28 : 13,812.57 = 5,760.45 : x
2. Step 2: Convert to fraction form
   10,007.28/13,812.57 = 5,760.45/x
3. Step 3: Cross multiply
   10,007.28x = 13,812.57 × 5,760.45
4. Step 4: Simplify right side
   10,007.28x = 79,566,618.86
5. Step 5: Solve for x
   x = 79,566,618.86/10,007.28
6. Step 6: Final answer
   x = 7,950.87