Finding the Fourth Proportional to 9,768.67, 13,480.23 and 5,520.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,768.67 : 13,480.23 = 5,520.22 : x
2. Step 2: Convert to fraction form
   9,768.67/13,480.23 = 5,520.22/x
3. Step 3: Cross multiply
   9,768.67x = 13,480.23 × 5,520.22
4. Step 4: Simplify right side
   9,768.67x = 74,413,835.25
5. Step 5: Solve for x
   x = 74,413,835.25/9,768.67
6. Step 6: Final answer
   x = 7,617.60