Finding the Fourth Proportional to 13,405.07, 18,498.16 and 7,436.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,405.07 : 18,498.16 = 7,436.62 : x
2. Step 2: Convert to fraction form
   13,405.07/18,498.16 = 7,436.62/x
3. Step 3: Cross multiply
   13,405.07x = 18,498.16 × 7,436.62
4. Step 4: Simplify right side
   13,405.07x = 137,563,721.78
5. Step 5: Solve for x
   x = 137,563,721.78/13,405.07
6. Step 6: Final answer
   x = 10,262.06