Finding the Fourth Proportional to 13,789.50, 20,684.67 and 3,401.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,789.50 : 20,684.67 = 3,401.25 : x
2. Step 2: Convert to fraction form
   13,789.50/20,684.67 = 3,401.25/x
3. Step 3: Cross multiply
   13,789.50x = 20,684.67 × 3,401.25
4. Step 4: Simplify right side
   13,789.50x = 70,353,733.84
5. Step 5: Solve for x
   x = 70,353,733.84/13,789.50
6. Step 6: Final answer
   x = 5,101.98