Finding the Fourth Proportional to 13,131.24, 19,697.85 and 3,771.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,131.24 : 19,697.85 = 3,771.18 : x
2. Step 2: Convert to fraction form
   13,131.24/19,697.85 = 3,771.18/x
3. Step 3: Cross multiply
   13,131.24x = 19,697.85 × 3,771.18
4. Step 4: Simplify right side
   13,131.24x = 74,284,137.96
5. Step 5: Solve for x
   x = 74,284,137.96/13,131.24
6. Step 6: Final answer
   x = 5,657.05