Finding the Fourth Proportional to 12,742.94, 19,108.17 and 3,977.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,742.94 : 19,108.17 = 3,977.82 : x
2. Step 2: Convert to fraction form
   12,742.94/19,108.17 = 3,977.82/x
3. Step 3: Cross multiply
   12,742.94x = 19,108.17 × 3,977.82
4. Step 4: Simplify right side
   12,742.94x = 76,008,860.79
5. Step 5: Solve for x
   x = 76,008,860.79/12,742.94
6. Step 6: Final answer
   x = 5,964.78