Finding the Fourth Proportional to 13,662.42, 20,491.20 and 3,799.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,662.42 : 20,491.20 = 3,799.05 : x
2. Step 2: Convert to fraction form
   13,662.42/20,491.20 = 3,799.05/x
3. Step 3: Cross multiply
   13,662.42x = 20,491.20 × 3,799.05
4. Step 4: Simplify right side
   13,662.42x = 77,847,093.36
5. Step 5: Solve for x
   x = 77,847,093.36/13,662.42
6. Step 6: Final answer
   x = 5,697.90