Finding the Fourth Proportional to 12,756.72, 19,127.72 and 4,956.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,756.72 : 19,127.72 = 4,956.42 : x
2. Step 2: Convert to fraction form
   12,756.72/19,127.72 = 4,956.42/x
3. Step 3: Cross multiply
   12,756.72x = 19,127.72 × 4,956.42
4. Step 4: Simplify right side
   12,756.72x = 94,805,013.96
5. Step 5: Solve for x
   x = 94,805,013.96/12,756.72
6. Step 6: Final answer
   x = 7,431.77