Finding the Fourth Proportional to 12,745.46, 19,118.17 and 3,981.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,745.46 : 19,118.17 = 3,981.12 : x
2. Step 2: Convert to fraction form
   12,745.46/19,118.17 = 3,981.12/x
3. Step 3: Cross multiply
   12,745.46x = 19,118.17 × 3,981.12
4. Step 4: Simplify right side
   12,745.46x = 76,111,728.95
5. Step 5: Solve for x
   x = 76,111,728.95/12,745.46
6. Step 6: Final answer
   x = 5,971.67