Finding the Fourth Proportional to 13,104, 19,659.24 and 3,870

Step by Step Solution

1. Step 1: Write the proportion equation
   13,104 : 19,659.24 = 3,870 : x
2. Step 2: Convert to fraction form
   13,104/19,659.24 = 3,870/x
3. Step 3: Cross multiply
   13,104x = 19,659.24 × 3,870
4. Step 4: Simplify right side
   13,104x = 76,081,258.80
5. Step 5: Solve for x
   x = 76,081,258.80/13,104
6. Step 6: Final answer
   x = 5,805.96