Finding the Fourth Proportional to 14,449.50, 19,940.31 and 7,825.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,449.50 : 19,940.31 = 7,825.50 : x
2. Step 2: Convert to fraction form
   14,449.50/19,940.31 = 7,825.50/x
3. Step 3: Cross multiply
   14,449.50x = 19,940.31 × 7,825.50
4. Step 4: Simplify right side
   14,449.50x = 156,042,895.91
5. Step 5: Solve for x
   x = 156,042,895.91/14,449.50
6. Step 6: Final answer
   x = 10,799.19