Finding the Fourth Proportional to 13,910.38, 19,196.32 and 7,622.89

Step by Step Solution

1. Step 1: Write the proportion equation
   13,910.38 : 19,196.32 = 7,622.89 : x
2. Step 2: Convert to fraction form
   13,910.38/19,196.32 = 7,622.89/x
3. Step 3: Cross multiply
   13,910.38x = 19,196.32 × 7,622.89
4. Step 4: Simplify right side
   13,910.38x = 146,331,435.76
5. Step 5: Solve for x
   x = 146,331,435.76/13,910.38
6. Step 6: Final answer
   x = 10,519.59