Finding the Fourth Proportional to 12,821.22, 17,693.42 and 7,516.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,821.22 : 17,693.42 = 7,516.13 : x
2. Step 2: Convert to fraction form
   12,821.22/17,693.42 = 7,516.13/x
3. Step 3: Cross multiply
   12,821.22x = 17,693.42 × 7,516.13
4. Step 4: Simplify right side
   12,821.22x = 132,985,918.82
5. Step 5: Solve for x
   x = 132,985,918.82/12,821.22
6. Step 6: Final answer
   x = 10,372.33