Finding the Fourth Proportional to 12,951.36, 19,404.96 and 8,577.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,951.36 : 19,404.96 = 8,577.12 : x
2. Step 2: Convert to fraction form
   12,951.36/19,404.96 = 8,577.12/x
3. Step 3: Cross multiply
   12,951.36x = 19,404.96 × 8,577.12
4. Step 4: Simplify right side
   12,951.36x = 166,438,670.52
5. Step 5: Solve for x
   x = 166,438,670.52/12,951.36
6. Step 6: Final answer
   x = 12,851.06