Finding the Fourth Proportional to 13,622.43, 18,800.72 and 7,654.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,622.43 : 18,800.72 = 7,654.12 : x
2. Step 2: Convert to fraction form
   13,622.43/18,800.72 = 7,654.12/x
3. Step 3: Cross multiply
   13,622.43x = 18,800.72 × 7,654.12
4. Step 4: Simplify right side
   13,622.43x = 143,902,966.97
5. Step 5: Solve for x
   x = 143,902,966.97/13,622.43
6. Step 6: Final answer
   x = 10,563.68