Finding the Fourth Proportional to 7,200.72, 10,786.68 and 5,722.41

Step by Step Solution

1. Step 1: Write the proportion equation
   7,200.72 : 10,786.68 = 5,722.41 : x
2. Step 2: Convert to fraction form
   7,200.72/10,786.68 = 5,722.41/x
3. Step 3: Cross multiply
   7,200.72x = 10,786.68 × 5,722.41
4. Step 4: Simplify right side
   7,200.72x = 61,725,805.50
5. Step 5: Solve for x
   x = 61,725,805.50/7,200.72
6. Step 6: Final answer
   x = 8,572.17