Finding the Fourth Proportional to 12,736.34, 19,106.60 and 3,969.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,736.34 : 19,106.60 = 3,969.48 : x
2. Step 2: Convert to fraction form
   12,736.34/19,106.60 = 3,969.48/x
3. Step 3: Cross multiply
   12,736.34x = 19,106.60 × 3,969.48
4. Step 4: Simplify right side
   12,736.34x = 75,843,246.72
5. Step 5: Solve for x
   x = 75,843,246.72/12,736.34
6. Step 6: Final answer
   x = 5,954.87