Finding the Fourth Proportional to 9,672.62, 14,513.79 and 7,212.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,672.62 : 14,513.79 = 7,212.38 : x
2. Step 2: Convert to fraction form
   9,672.62/14,513.79 = 7,212.38/x
3. Step 3: Cross multiply
   9,672.62x = 14,513.79 × 7,212.38
4. Step 4: Simplify right side
   9,672.62x = 104,678,968.72
5. Step 5: Solve for x
   x = 104,678,968.72/9,672.62
6. Step 6: Final answer
   x = 10,822.19