Finding the Fourth Proportional to 10,722.78, 14,805.28 and 7,745.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,722.78 : 14,805.28 = 7,745.22 : x
2. Step 2: Convert to fraction form
   10,722.78/14,805.28 = 7,745.22/x
3. Step 3: Cross multiply
   10,722.78x = 14,805.28 × 7,745.22
4. Step 4: Simplify right side
   10,722.78x = 114,670,150.76
5. Step 5: Solve for x
   x = 114,670,150.76/10,722.78
6. Step 6: Final answer
   x = 10,694.07