Finding the Fourth Proportional to 12,757.60, 19,141.98 and 4,963.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,757.60 : 19,141.98 = 4,963.72 : x
2. Step 2: Convert to fraction form
   12,757.60/19,141.98 = 4,963.72/x
3. Step 3: Cross multiply
   12,757.60x = 19,141.98 × 4,963.72
4. Step 4: Simplify right side
   12,757.60x = 95,015,428.97
5. Step 5: Solve for x
   x = 95,015,428.97/12,757.60
6. Step 6: Final answer
   x = 7,447.75