Finding the Fourth Proportional to 11,418.30, 17,094.63 and 8,436.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,418.30 : 17,094.63 = 8,436.69 : x
2. Step 2: Convert to fraction form
   11,418.30/17,094.63 = 8,436.69/x
3. Step 3: Cross multiply
   11,418.30x = 17,094.63 × 8,436.69
4. Step 4: Simplify right side
   11,418.30x = 144,222,093.97
5. Step 5: Solve for x
   x = 144,222,093.97/11,418.30
6. Step 6: Final answer
   x = 12,630.79