Finding the Fourth Proportional to 9,681.12, 13,364.01 and 8,196.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,681.12 : 13,364.01 = 8,196.72 : x
2. Step 2: Convert to fraction form
   9,681.12/13,364.01 = 8,196.72/x
3. Step 3: Cross multiply
   9,681.12x = 13,364.01 × 8,196.72
4. Step 4: Simplify right side
   9,681.12x = 109,541,048.05
5. Step 5: Solve for x
   x = 109,541,048.05/9,681.12
6. Step 6: Final answer
   x = 11,314.91