Finding the Fourth Proportional to 13,637.34, 20,453.72 and 3,777.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,637.34 : 20,453.72 = 3,777.62 : x
2. Step 2: Convert to fraction form
   13,637.34/20,453.72 = 3,777.62/x
3. Step 3: Cross multiply
   13,637.34x = 20,453.72 × 3,777.62
4. Step 4: Simplify right side
   13,637.34x = 77,266,260.59
5. Step 5: Solve for x
   x = 77,266,260.59/13,637.34
6. Step 6: Final answer
   x = 5,665.79