Finding the Fourth Proportional to 13,910.28, 19,196.28 and 7,622.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,910.28 : 19,196.28 = 7,622.88 : x
2. Step 2: Convert to fraction form
   13,910.28/19,196.28 = 7,622.88/x
3. Step 3: Cross multiply
   13,910.28x = 19,196.28 × 7,622.88
4. Step 4: Simplify right side
   13,910.28x = 146,330,938.89
5. Step 5: Solve for x
   x = 146,330,938.89/13,910.28
6. Step 6: Final answer
   x = 10,519.63