Finding the Fourth Proportional to 10,140.73, 13,993.50 and 5,603.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,140.73 : 13,993.50 = 5,603.21 : x
2. Step 2: Convert to fraction form
   10,140.73/13,993.50 = 5,603.21/x
3. Step 3: Cross multiply
   10,140.73x = 13,993.50 × 5,603.21
4. Step 4: Simplify right side
   10,140.73x = 78,408,519.14
5. Step 5: Solve for x
   x = 78,408,519.14/10,140.73
6. Step 6: Final answer
   x = 7,732.04