Finding the Fourth Proportional to 10,222.40, 14,106.15 and 5,745.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,222.40 : 14,106.15 = 5,745.28 : x
2. Step 2: Convert to fraction form
   10,222.40/14,106.15 = 5,745.28/x
3. Step 3: Cross multiply
   10,222.40x = 14,106.15 × 5,745.28
4. Step 4: Simplify right side
   10,222.40x = 81,043,772.66
5. Step 5: Solve for x
   x = 81,043,772.66/10,222.40
6. Step 6: Final answer
   x = 7,928.06