Finding the Fourth Proportional to 10,040.67, 13,855.72 and 5,564.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,040.67 : 13,855.72 = 5,564.49 : x
2. Step 2: Convert to fraction form
   10,040.67/13,855.72 = 5,564.49/x
3. Step 3: Cross multiply
   10,040.67x = 13,855.72 × 5,564.49
4. Step 4: Simplify right side
   10,040.67x = 77,100,015.38
5. Step 5: Solve for x
   x = 77,100,015.38/10,040.67
6. Step 6: Final answer
   x = 7,678.77