Finding the Fourth Proportional to 12,796.61, 19,195.07 and 3,912.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,796.61 : 19,195.07 = 3,912.12 : x
2. Step 2: Convert to fraction form
   12,796.61/19,195.07 = 3,912.12/x
3. Step 3: Cross multiply
   12,796.61x = 19,195.07 × 3,912.12
4. Step 4: Simplify right side
   12,796.61x = 75,093,397.69
5. Step 5: Solve for x
   x = 75,093,397.69/12,796.61
6. Step 6: Final answer
   x = 5,868.23