Finding the Fourth Proportional to 9,709.82, 13,399.52 and 5,518.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,709.82 : 13,399.52 = 5,518.08 : x
2. Step 2: Convert to fraction form
   9,709.82/13,399.52 = 5,518.08/x
3. Step 3: Cross multiply
   9,709.82x = 13,399.52 × 5,518.08
4. Step 4: Simplify right side
   9,709.82x = 73,939,623.32
5. Step 5: Solve for x
   x = 73,939,623.32/9,709.82
6. Step 6: Final answer
   x = 7,614.93