Finding the Fourth Proportional to 9,620.72, 13,270.48 and 8,483.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,620.72 : 13,270.48 = 8,483.48 : x
2. Step 2: Convert to fraction form
   9,620.72/13,270.48 = 8,483.48/x
3. Step 3: Cross multiply
   9,620.72x = 13,270.48 × 8,483.48
4. Step 4: Simplify right side
   9,620.72x = 112,579,851.67
5. Step 5: Solve for x
   x = 112,579,851.67/9,620.72
6. Step 6: Final answer
   x = 11,701.81