Finding the Fourth Proportional to 12,821.67, 17,694.05 and 7,516.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,821.67 : 17,694.05 = 7,516.58 : x
2. Step 2: Convert to fraction form
   12,821.67/17,694.05 = 7,516.58/x
3. Step 3: Cross multiply
   12,821.67x = 17,694.05 × 7,516.58
4. Step 4: Simplify right side
   12,821.67x = 132,998,616.30
5. Step 5: Solve for x
   x = 132,998,616.30/12,821.67
6. Step 6: Final answer
   x = 10,372.96