Finding the Fourth Proportional to 13,912.05, 19,198.89 and 7,624.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,912.05 : 19,198.89 = 7,624.38 : x
2. Step 2: Convert to fraction form
   13,912.05/19,198.89 = 7,624.38/x
3. Step 3: Cross multiply
   13,912.05x = 19,198.89 × 7,624.38
4. Step 4: Simplify right side
   13,912.05x = 146,379,632.94
5. Step 5: Solve for x
   x = 146,379,632.94/13,912.05
6. Step 6: Final answer
   x = 10,521.79