Finding the Fourth Proportional to 13,918.88, 19,196.88 and 12,236.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,918.88 : 19,196.88 = 12,236.72 : x
2. Step 2: Convert to fraction form
   13,918.88/19,196.88 = 12,236.72/x
3. Step 3: Cross multiply
   13,918.88x = 19,196.88 × 12,236.72
4. Step 4: Simplify right side
   13,918.88x = 234,906,845.43
5. Step 5: Solve for x
   x = 234,906,845.43/13,918.88
6. Step 6: Final answer
   x = 16,876.85