Finding the Fourth Proportional to 12,742.17, 19,112.57 and 3,976.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,742.17 : 19,112.57 = 3,976.08 : x
2. Step 2: Convert to fraction form
   12,742.17/19,112.57 = 3,976.08/x
3. Step 3: Cross multiply
   12,742.17x = 19,112.57 × 3,976.08
4. Step 4: Simplify right side
   12,742.17x = 75,993,011.76
5. Step 5: Solve for x
   x = 75,993,011.76/12,742.17
6. Step 6: Final answer
   x = 5,963.90