Finding the Fourth Proportional to 13,684.59, 20,523.87 and 3,821.22

Step by Step Solution

1. Step 1: Write the proportion equation
   13,684.59 : 20,523.87 = 3,821.22 : x
2. Step 2: Convert to fraction form
   13,684.59/20,523.87 = 3,821.22/x
3. Step 3: Cross multiply
   13,684.59x = 20,523.87 × 3,821.22
4. Step 4: Simplify right side
   13,684.59x = 78,426,222.52
5. Step 5: Solve for x
   x = 78,426,222.52/13,684.59
6. Step 6: Final answer
   x = 5,730.99