Finding the Fourth Proportional to 12,976.56, 19,465.47 and 3,616.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,976.56 : 19,465.47 = 3,616.56 : x
2. Step 2: Convert to fraction form
   12,976.56/19,465.47 = 3,616.56/x
3. Step 3: Cross multiply
   12,976.56x = 19,465.47 × 3,616.56
4. Step 4: Simplify right side
   12,976.56x = 70,398,040.18
5. Step 5: Solve for x
   x = 70,398,040.18/12,976.56
6. Step 6: Final answer
   x = 5,425.02