Finding the Fourth Proportional to 12,738.72, 19,110.96 and 4,949.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,738.72 : 19,110.96 = 4,949.76 : x
2. Step 2: Convert to fraction form
   12,738.72/19,110.96 = 4,949.76/x
3. Step 3: Cross multiply
   12,738.72x = 19,110.96 × 4,949.76
4. Step 4: Simplify right side
   12,738.72x = 94,594,665.37
5. Step 5: Solve for x
   x = 94,594,665.37/12,738.72
6. Step 6: Final answer
   x = 7,425.76