Finding the Fourth Proportional to 12,725.60, 19,085.34 and 3,839.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,725.60 : 19,085.34 = 3,839.09 : x
2. Step 2: Convert to fraction form
   12,725.60/19,085.34 = 3,839.09/x
3. Step 3: Cross multiply
   12,725.60x = 19,085.34 × 3,839.09
4. Step 4: Simplify right side
   12,725.60x = 73,270,242.51
5. Step 5: Solve for x
   x = 73,270,242.51/12,725.60
6. Step 6: Final answer
   x = 5,757.71