Finding the Fourth Proportional to 12,436, 17,164.88 and 7,133.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436 : 17,164.88 = 7,133.72 : x
2. Step 2: Convert to fraction form
   12,436/17,164.88 = 7,133.72/x
3. Step 3: Cross multiply
   12,436x = 17,164.88 × 7,133.72
4. Step 4: Simplify right side
   12,436x = 122,449,447.75
5. Step 5: Solve for x
   x = 122,449,447.75/12,436
6. Step 6: Final answer
   x = 9,846.37