Finding the Fourth Proportional to 12,745.78, 19,112.72 and 4,849.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,745.78 : 19,112.72 = 4,849.76 : x
2. Step 2: Convert to fraction form
   12,745.78/19,112.72 = 4,849.76/x
3. Step 3: Cross multiply
   12,745.78x = 19,112.72 × 4,849.76
4. Step 4: Simplify right side
   12,745.78x = 92,692,104.95
5. Step 5: Solve for x
   x = 92,692,104.95/12,745.78
6. Step 6: Final answer
   x = 7,272.38