Finding the Fourth Proportional to 9,200.61, 12,697.24 and 5,222.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,200.61 : 12,697.24 = 5,222.09 : x
2. Step 2: Convert to fraction form
   9,200.61/12,697.24 = 5,222.09/x
3. Step 3: Cross multiply
   9,200.61x = 12,697.24 × 5,222.09
4. Step 4: Simplify right side
   9,200.61x = 66,306,148.72
5. Step 5: Solve for x
   x = 66,306,148.72/9,200.61
6. Step 6: Final answer
   x = 7,206.71