Finding the Fourth Proportional to 13,009, 19,403.89 and 10,904.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,009 : 19,403.89 = 10,904.62 : x
2. Step 2: Convert to fraction form
   13,009/19,403.89 = 10,904.62/x
3. Step 3: Cross multiply
   13,009x = 19,403.89 × 10,904.62
4. Step 4: Simplify right side
   13,009x = 211,592,046.97
5. Step 5: Solve for x
   x = 211,592,046.97/13,009
6. Step 6: Final answer
   x = 16,265.05