Finding the Fourth Proportional to 14,309.78, 19,747.68 and 7,936.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,309.78 : 19,747.68 = 7,936.50 : x
2. Step 2: Convert to fraction form
   14,309.78/19,747.68 = 7,936.50/x
3. Step 3: Cross multiply
   14,309.78x = 19,747.68 × 7,936.50
4. Step 4: Simplify right side
   14,309.78x = 156,727,462.32
5. Step 5: Solve for x
   x = 156,727,462.32/14,309.78
6. Step 6: Final answer
   x = 10,952.47