Finding the Fourth Proportional to 12,684.50, 19,021.39 and 3,801.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,684.50 : 19,021.39 = 3,801.09 : x
2. Step 2: Convert to fraction form
   12,684.50/19,021.39 = 3,801.09/x
3. Step 3: Cross multiply
   12,684.50x = 19,021.39 × 3,801.09
4. Step 4: Simplify right side
   12,684.50x = 72,302,047.71
5. Step 5: Solve for x
   x = 72,302,047.71/12,684.50
6. Step 6: Final answer
   x = 5,700.03