Finding the Fourth Proportional to 13,436.56, 18,558.06 and 8,953

Step by Step Solution

1. Step 1: Write the proportion equation
   13,436.56 : 18,558.06 = 8,953 : x
2. Step 2: Convert to fraction form
   13,436.56/18,558.06 = 8,953/x
3. Step 3: Cross multiply
   13,436.56x = 18,558.06 × 8,953
4. Step 4: Simplify right side
   13,436.56x = 166,150,311.18
5. Step 5: Solve for x
   x = 166,150,311.18/13,436.56
6. Step 6: Final answer
   x = 12,365.54