Finding the Fourth Proportional to 12,822.30, 17,687.67 and 7,516.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,822.30 : 17,687.67 = 7,516.09 : x
2. Step 2: Convert to fraction form
   12,822.30/17,687.67 = 7,516.09/x
3. Step 3: Cross multiply
   12,822.30x = 17,687.67 × 7,516.09
4. Step 4: Simplify right side
   12,822.30x = 132,942,113.53
5. Step 5: Solve for x
   x = 132,942,113.53/12,822.30
6. Step 6: Final answer
   x = 10,368.04