Finding the Fourth Proportional to 10,040.42, 13,857.28 and 5,790.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,040.42 : 13,857.28 = 5,790.69 : x
2. Step 2: Convert to fraction form
   10,040.42/13,857.28 = 5,790.69/x
3. Step 3: Cross multiply
   10,040.42x = 13,857.28 × 5,790.69
4. Step 4: Simplify right side
   10,040.42x = 80,243,198.25
5. Step 5: Solve for x
   x = 80,243,198.25/10,040.42
6. Step 6: Final answer
   x = 7,992.01