Finding the Fourth Proportional to 7,722.82, 11,568.72 and 3,557.05

Step by Step Solution

1. Step 1: Write the proportion equation
   7,722.82 : 11,568.72 = 3,557.05 : x
2. Step 2: Convert to fraction form
   7,722.82/11,568.72 = 3,557.05/x
3. Step 3: Cross multiply
   7,722.82x = 11,568.72 × 3,557.05
4. Step 4: Simplify right side
   7,722.82x = 41,150,515.48
5. Step 5: Solve for x
   x = 41,150,515.48/7,722.82
6. Step 6: Final answer
   x = 5,328.43