Finding the Fourth Proportional to 12,732.50, 19,106.43 and 5,436.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,732.50 : 19,106.43 = 5,436.50 : x
2. Step 2: Convert to fraction form
   12,732.50/19,106.43 = 5,436.50/x
3. Step 3: Cross multiply
   12,732.50x = 19,106.43 × 5,436.50
4. Step 4: Simplify right side
   12,732.50x = 103,872,106.70
5. Step 5: Solve for x
   x = 103,872,106.70/12,732.50
6. Step 6: Final answer
   x = 8,158.03