Finding the Fourth Proportional to 13,485.32, 18,609.02 and 7,436.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,485.32 : 18,609.02 = 7,436.54 : x
2. Step 2: Convert to fraction form
   13,485.32/18,609.02 = 7,436.54/x
3. Step 3: Cross multiply
   13,485.32x = 18,609.02 × 7,436.54
4. Step 4: Simplify right side
   13,485.32x = 138,386,721.59
5. Step 5: Solve for x
   x = 138,386,721.59/13,485.32
6. Step 6: Final answer
   x = 10,262.03