Finding the Fourth Proportional to 9,289.72, 12,819.82 and 5,310.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,289.72 : 12,819.82 = 5,310.92 : x
2. Step 2: Convert to fraction form
   9,289.72/12,819.82 = 5,310.92/x
3. Step 3: Cross multiply
   9,289.72x = 12,819.82 × 5,310.92
4. Step 4: Simplify right side
   9,289.72x = 68,084,971.02
5. Step 5: Solve for x
   x = 68,084,971.02/9,289.72
6. Step 6: Final answer
   x = 7,329.07