Finding the Fourth Proportional to 14,245.78, 19,659.54 and 7,958.56

Step by Step Solution

1. Step 1: Write the proportion equation
   14,245.78 : 19,659.54 = 7,958.56 : x
2. Step 2: Convert to fraction form
   14,245.78/19,659.54 = 7,958.56/x
3. Step 3: Cross multiply
   14,245.78x = 19,659.54 × 7,958.56
4. Step 4: Simplify right side
   14,245.78x = 156,461,628.66
5. Step 5: Solve for x
   x = 156,461,628.66/14,245.78
6. Step 6: Final answer
   x = 10,983.02