Finding the Fourth Proportional to 13,081.87, 19,610.25 and 8,388.73

Step by Step Solution

1. Step 1: Write the proportion equation
   13,081.87 : 19,610.25 = 8,388.73 : x
2. Step 2: Convert to fraction form
   13,081.87/19,610.25 = 8,388.73/x
3. Step 3: Cross multiply
   13,081.87x = 19,610.25 × 8,388.73
4. Step 4: Simplify right side
   13,081.87x = 164,505,092.48
5. Step 5: Solve for x
   x = 164,505,092.48/13,081.87
6. Step 6: Final answer
   x = 12,575.04