Finding the Fourth Proportional to 20,501.08, 28,292.72 and 13,683.41

Step by Step Solution

1. Step 1: Write the proportion equation
   20,501.08 : 28,292.72 = 13,683.41 : x
2. Step 2: Convert to fraction form
   20,501.08/28,292.72 = 13,683.41/x
3. Step 3: Cross multiply
   20,501.08x = 28,292.72 × 13,683.41
4. Step 4: Simplify right side
   20,501.08x = 387,140,677.89
5. Step 5: Solve for x
   x = 387,140,677.89/20,501.08
6. Step 6: Final answer
   x = 18,883.92