Finding the Fourth Proportional to 9,225.69, 12,731.82 and 5,247.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,225.69 : 12,731.82 = 5,247.18 : x
2. Step 2: Convert to fraction form
   9,225.69/12,731.82 = 5,247.18/x
3. Step 3: Cross multiply
   9,225.69x = 12,731.82 × 5,247.18
4. Step 4: Simplify right side
   9,225.69x = 66,806,151.27
5. Step 5: Solve for x
   x = 66,806,151.27/9,225.69
6. Step 6: Final answer
   x = 7,241.32