Finding the Fourth Proportional to 9,996.39, 13,795.02 and 5,520.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,996.39 : 13,795.02 = 5,520.15 : x
2. Step 2: Convert to fraction form
   9,996.39/13,795.02 = 5,520.15/x
3. Step 3: Cross multiply
   9,996.39x = 13,795.02 × 5,520.15
4. Step 4: Simplify right side
   9,996.39x = 76,150,579.65
5. Step 5: Solve for x
   x = 76,150,579.65/9,996.39
6. Step 6: Final answer
   x = 7,617.81