Finding the Fourth Proportional to 13,425.42, 20,136.56 and 3,565.46

Step by Step Solution

1. Step 1: Write the proportion equation
   13,425.42 : 20,136.56 = 3,565.46 : x
2. Step 2: Convert to fraction form
   13,425.42/20,136.56 = 3,565.46/x
3. Step 3: Cross multiply
   13,425.42x = 20,136.56 × 3,565.46
4. Step 4: Simplify right side
   13,425.42x = 71,796,131.73
5. Step 5: Solve for x
   x = 71,796,131.73/13,425.42
6. Step 6: Final answer
   x = 5,347.77