Finding the Fourth Proportional to 14,654.31, 20,222.91 and 7,940.10

Step by Step Solution

1. Step 1: Write the proportion equation
   14,654.31 : 20,222.91 = 7,940.10 : x
2. Step 2: Convert to fraction form
   14,654.31/20,222.91 = 7,940.10/x
3. Step 3: Cross multiply
   14,654.31x = 20,222.91 × 7,940.10
4. Step 4: Simplify right side
   14,654.31x = 160,571,927.69
5. Step 5: Solve for x
   x = 160,571,927.69/14,654.31
6. Step 6: Final answer
   x = 10,957.32