Finding the Fourth Proportional to 9,819.09, 13,550.72 and 5,628.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.09 : 13,550.72 = 5,628.15 : x
2. Step 2: Convert to fraction form
   9,819.09/13,550.72 = 5,628.15/x
3. Step 3: Cross multiply
   9,819.09x = 13,550.72 × 5,628.15
4. Step 4: Simplify right side
   9,819.09x = 76,265,456.63
5. Step 5: Solve for x
   x = 76,265,456.63/9,819.09
6. Step 6: Final answer
   x = 7,767.06