Finding the Fourth Proportional to 16,243.47, 24,345.58 and 7,911

Step by Step Solution

1. Step 1: Write the proportion equation
   16,243.47 : 24,345.58 = 7,911 : x
2. Step 2: Convert to fraction form
   16,243.47/24,345.58 = 7,911/x
3. Step 3: Cross multiply
   16,243.47x = 24,345.58 × 7,911
4. Step 4: Simplify right side
   16,243.47x = 192,597,883.38
5. Step 5: Solve for x
   x = 192,597,883.38/16,243.47
6. Step 6: Final answer
   x = 11,856.94