Finding the Fourth Proportional to 10,221.54, 14,105.22 and 5,745.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,221.54 : 14,105.22 = 5,745.48 : x
2. Step 2: Convert to fraction form
   10,221.54/14,105.22 = 5,745.48/x
3. Step 3: Cross multiply
   10,221.54x = 14,105.22 × 5,745.48
4. Step 4: Simplify right side
   10,221.54x = 81,041,259.41
5. Step 5: Solve for x
   x = 81,041,259.41/10,221.54
6. Step 6: Final answer
   x = 7,928.48