Finding the Fourth Proportional to 13,168.59, 19,749.96 and 3,806.57

Step by Step Solution

1. Step 1: Write the proportion equation
   13,168.59 : 19,749.96 = 3,806.57 : x
2. Step 2: Convert to fraction form
   13,168.59/19,749.96 = 3,806.57/x
3. Step 3: Cross multiply
   13,168.59x = 19,749.96 × 3,806.57
4. Step 4: Simplify right side
   13,168.59x = 75,179,506.49
5. Step 5: Solve for x
   x = 75,179,506.49/13,168.59
6. Step 6: Final answer
   x = 5,709.00