Finding the Fourth Proportional to 12,979.49, 17,911.77 and 7,314.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,979.49 : 17,911.77 = 7,314.33 : x
2. Step 2: Convert to fraction form
   12,979.49/17,911.77 = 7,314.33/x
3. Step 3: Cross multiply
   12,979.49x = 17,911.77 × 7,314.33
4. Step 4: Simplify right side
   12,979.49x = 131,012,485.27
5. Step 5: Solve for x
   x = 131,012,485.27/12,979.49
6. Step 6: Final answer
   x = 10,093.81