Finding the Fourth Proportional to 12,714.42, 19,082.61 and 8,821.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,714.42 : 19,082.61 = 8,821.56 : x
2. Step 2: Convert to fraction form
   12,714.42/19,082.61 = 8,821.56/x
3. Step 3: Cross multiply
   12,714.42x = 19,082.61 × 8,821.56
4. Step 4: Simplify right side
   12,714.42x = 168,338,389.07
5. Step 5: Solve for x
   x = 168,338,389.07/12,714.42
6. Step 6: Final answer
   x = 13,239.96