Finding the Fourth Proportional to 10,021.40, 13,828.28 and 5,544.53

Step by Step Solution

1. Step 1: Write the proportion equation
   10,021.40 : 13,828.28 = 5,544.53 : x
2. Step 2: Convert to fraction form
   10,021.40/13,828.28 = 5,544.53/x
3. Step 3: Cross multiply
   10,021.40x = 13,828.28 × 5,544.53
4. Step 4: Simplify right side
   10,021.40x = 76,671,216.44
5. Step 5: Solve for x
   x = 76,671,216.44/10,021.40
6. Step 6: Final answer
   x = 7,650.75