Finding the Fourth Proportional to 9,278.69, 12,805.22 and 5,244.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,278.69 : 12,805.22 = 5,244.12 : x
2. Step 2: Convert to fraction form
   9,278.69/12,805.22 = 5,244.12/x
3. Step 3: Cross multiply
   9,278.69x = 12,805.22 × 5,244.12
4. Step 4: Simplify right side
   9,278.69x = 67,152,110.31
5. Step 5: Solve for x
   x = 67,152,110.31/9,278.69
6. Step 6: Final answer
   x = 7,237.24