Finding the Fourth Proportional to 10,122.05, 15,187.46 and 5,436.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,122.05 : 15,187.46 = 5,436.59 : x
2. Step 2: Convert to fraction form
   10,122.05/15,187.46 = 5,436.59/x
3. Step 3: Cross multiply
   10,122.05x = 15,187.46 × 5,436.59
4. Step 4: Simplify right side
   10,122.05x = 82,568,056.41
5. Step 5: Solve for x
   x = 82,568,056.41/10,122.05
6. Step 6: Final answer
   x = 8,157.25