Finding the Fourth Proportional to 12,423.68, 17,144.37 and 7,118.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,423.68 : 17,144.37 = 7,118.16 : x
2. Step 2: Convert to fraction form
   12,423.68/17,144.37 = 7,118.16/x
3. Step 3: Cross multiply
   12,423.68x = 17,144.37 × 7,118.16
4. Step 4: Simplify right side
   12,423.68x = 122,036,265.24
5. Step 5: Solve for x
   x = 122,036,265.24/12,423.68
6. Step 6: Final answer
   x = 9,822.88