Finding the Fourth Proportional to 8,514.31, 12,851.44 and 8,514.31

Step by Step Solution

1. Step 1: Write the proportion equation
   8,514.31 : 12,851.44 = 8,514.31 : x
2. Step 2: Convert to fraction form
   8,514.31/12,851.44 = 8,514.31/x
3. Step 3: Cross multiply
   8,514.31x = 12,851.44 × 8,514.31
4. Step 4: Simplify right side
   8,514.31x = 109,421,176.82
5. Step 5: Solve for x
   x = 109,421,176.82/8,514.31
6. Step 6: Final answer
   x = 12,851.44