Finding the Fourth Proportional to 11,929.83, 16,478.66 and 9,079.89

Step by Step Solution

1. Step 1: Write the proportion equation
   11,929.83 : 16,478.66 = 9,079.89 : x
2. Step 2: Convert to fraction form
   11,929.83/16,478.66 = 9,079.89/x
3. Step 3: Cross multiply
   11,929.83x = 16,478.66 × 9,079.89
4. Step 4: Simplify right side
   11,929.83x = 149,624,420.15
5. Step 5: Solve for x
   x = 149,624,420.15/11,929.83
6. Step 6: Final answer
   x = 12,542.04