Finding the Fourth Proportional to 11,929.78, 16,464.89 and 8,583.67

Step by Step Solution

1. Step 1: Write the proportion equation
   11,929.78 : 16,464.89 = 8,583.67 : x
2. Step 2: Convert to fraction form
   11,929.78/16,464.89 = 8,583.67/x
3. Step 3: Cross multiply
   11,929.78x = 16,464.89 × 8,583.67
4. Step 4: Simplify right side
   11,929.78x = 141,329,057.10
5. Step 5: Solve for x
   x = 141,329,057.10/11,929.78
6. Step 6: Final answer
   x = 11,846.75