Finding the Fourth Proportional to 11,164.91, 15,404.31 and 7,979.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,164.91 : 15,404.31 = 7,979.18 : x
2. Step 2: Convert to fraction form
   11,164.91/15,404.31 = 7,979.18/x
3. Step 3: Cross multiply
   11,164.91x = 15,404.31 × 7,979.18
4. Step 4: Simplify right side
   11,164.91x = 122,913,685.24
5. Step 5: Solve for x
   x = 122,913,685.24/11,164.91
6. Step 6: Final answer
   x = 11,008.93