Finding the Fourth Proportional to 13,405.08, 18,498.60 and 7,436.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,405.08 : 18,498.60 = 7,436.82 : x
2. Step 2: Convert to fraction form
   13,405.08/18,498.60 = 7,436.82/x
3. Step 3: Cross multiply
   13,405.08x = 18,498.60 × 7,436.82
4. Step 4: Simplify right side
   13,405.08x = 137,570,758.45
5. Step 5: Solve for x
   x = 137,570,758.45/13,405.08
6. Step 6: Final answer
   x = 10,262.58