Finding the Fourth Proportional to 13,948.72, 19,250.46 and 7,662.40

Step by Step Solution

1. Step 1: Write the proportion equation
   13,948.72 : 19,250.46 = 7,662.40 : x
2. Step 2: Convert to fraction form
   13,948.72/19,250.46 = 7,662.40/x
3. Step 3: Cross multiply
   13,948.72x = 19,250.46 × 7,662.40
4. Step 4: Simplify right side
   13,948.72x = 147,504,724.70
5. Step 5: Solve for x
   x = 147,504,724.70/13,948.72
6. Step 6: Final answer
   x = 10,574.79