Finding the Fourth Proportional to 13,131.87, 19,697.88 and 3,772.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,131.87 : 19,697.88 = 3,772.27 : x
2. Step 2: Convert to fraction form
   13,131.87/19,697.88 = 3,772.27/x
3. Step 3: Cross multiply
   13,131.87x = 19,697.88 × 3,772.27
4. Step 4: Simplify right side
   13,131.87x = 74,305,760.56
5. Step 5: Solve for x
   x = 74,305,760.56/13,131.87
6. Step 6: Final answer
   x = 5,658.43