Finding the Fourth Proportional to 12,736.84, 19,107.35 and 3,969.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,736.84 : 19,107.35 = 3,969.98 : x
2. Step 2: Convert to fraction form
   12,736.84/19,107.35 = 3,969.98/x
3. Step 3: Cross multiply
   12,736.84x = 19,107.35 × 3,969.98
4. Step 4: Simplify right side
   12,736.84x = 75,855,797.35
5. Step 5: Solve for x
   x = 75,855,797.35/12,736.84
6. Step 6: Final answer
   x = 5,955.62