Finding the Fourth Proportional to 11,689.20, 17,522.46 and 4,667.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,689.20 : 17,522.46 = 4,667.18 : x
2. Step 2: Convert to fraction form
   11,689.20/17,522.46 = 4,667.18/x
3. Step 3: Cross multiply
   11,689.20x = 17,522.46 × 4,667.18
4. Step 4: Simplify right side
   11,689.20x = 81,780,474.86
5. Step 5: Solve for x
   x = 81,780,474.86/11,689.20
6. Step 6: Final answer
   x = 6,996.24