Finding the Fourth Proportional to 12,118.36, 16,719.06 and 7,929.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,118.36 : 16,719.06 = 7,929.04 : x
2. Step 2: Convert to fraction form
   12,118.36/16,719.06 = 7,929.04/x
3. Step 3: Cross multiply
   12,118.36x = 16,719.06 × 7,929.04
4. Step 4: Simplify right side
   12,118.36x = 132,566,095.50
5. Step 5: Solve for x
   x = 132,566,095.50/12,118.36
6. Step 6: Final answer
   x = 10,939.28