Finding the Fourth Proportional to 21,131.33, 31,695.37 and 5,548.55

Step by Step Solution

1. Step 1: Write the proportion equation
   21,131.33 : 31,695.37 = 5,548.55 : x
2. Step 2: Convert to fraction form
   21,131.33/31,695.37 = 5,548.55/x
3. Step 3: Cross multiply
   21,131.33x = 31,695.37 × 5,548.55
4. Step 4: Simplify right side
   21,131.33x = 175,863,172.87
5. Step 5: Solve for x
   x = 175,863,172.87/21,131.33
6. Step 6: Final answer
   x = 8,322.39