Finding the Fourth Proportional to 10,040.45, 13,855.91 and 5,564.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,040.45 : 13,855.91 = 5,564.28 : x
2. Step 2: Convert to fraction form
   10,040.45/13,855.91 = 5,564.28/x
3. Step 3: Cross multiply
   10,040.45x = 13,855.91 × 5,564.28
4. Step 4: Simplify right side
   10,040.45x = 77,098,065.79
5. Step 5: Solve for x
   x = 77,098,065.79/10,040.45
6. Step 6: Final answer
   x = 7,678.75