Finding the Fourth Proportional to 12,969.05, 19,451.64 and 3,608.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,969.05 : 19,451.64 = 3,608.09 : x
2. Step 2: Convert to fraction form
   12,969.05/19,451.64 = 3,608.09/x
3. Step 3: Cross multiply
   12,969.05x = 19,451.64 × 3,608.09
4. Step 4: Simplify right side
   12,969.05x = 70,183,267.77
5. Step 5: Solve for x
   x = 70,183,267.77/12,969.05
6. Step 6: Final answer
   x = 5,411.60