Finding the Fourth Proportional to 12,436.29, 17,154.54 and 7,958.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436.29 : 17,154.54 = 7,958.46 : x
2. Step 2: Convert to fraction form
   12,436.29/17,154.54 = 7,958.46/x
3. Step 3: Cross multiply
   12,436.29x = 17,154.54 × 7,958.46
4. Step 4: Simplify right side
   12,436.29x = 136,523,720.41
5. Step 5: Solve for x
   x = 136,523,720.41/12,436.29
6. Step 6: Final answer
   x = 10,977.85