Finding the Fourth Proportional to 12,436.38, 18,657.52 and 4,116.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436.38 : 18,657.52 = 4,116.40 : x
2. Step 2: Convert to fraction form
   12,436.38/18,657.52 = 4,116.40/x
3. Step 3: Cross multiply
   12,436.38x = 18,657.52 × 4,116.40
4. Step 4: Simplify right side
   12,436.38x = 76,801,815.33
5. Step 5: Solve for x
   x = 76,801,815.33/12,436.38
6. Step 6: Final answer
   x = 6,175.58