Finding the Fourth Proportional to 12,836.50, 19,240.14 and 5,436.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,836.50 : 19,240.14 = 5,436.34 : x
2. Step 2: Convert to fraction form
   12,836.50/19,240.14 = 5,436.34/x
3. Step 3: Cross multiply
   12,836.50x = 19,240.14 × 5,436.34
4. Step 4: Simplify right side
   12,836.50x = 104,595,942.69
5. Step 5: Solve for x
   x = 104,595,942.69/12,836.50
6. Step 6: Final answer
   x = 8,148.32