Finding the Fourth Proportional to 7,722.72, 10,653.36 and 5,366.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,722.72 : 10,653.36 = 5,366.88 : x
2. Step 2: Convert to fraction form
   7,722.72/10,653.36 = 5,366.88/x
3. Step 3: Cross multiply
   7,722.72x = 10,653.36 × 5,366.88
4. Step 4: Simplify right side
   7,722.72x = 57,175,304.72
5. Step 5: Solve for x
   x = 57,175,304.72/7,722.72
6. Step 6: Final answer
   x = 7,403.52