Finding the Fourth Proportional to 9,650.81, 13,196.51 and 9,650.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,650.81 : 13,196.51 = 9,650.81 : x
2. Step 2: Convert to fraction form
   9,650.81/13,196.51 = 9,650.81/x
3. Step 3: Cross multiply
   9,650.81x = 13,196.51 × 9,650.81
4. Step 4: Simplify right side
   9,650.81x = 127,357,067.79
5. Step 5: Solve for x
   x = 127,357,067.79/9,650.81
6. Step 6: Final answer
   x = 13,196.51