Finding the Fourth Proportional to 21,977.52, 30,326.56 and 12,544.26

Step by Step Solution

1. Step 1: Write the proportion equation
   21,977.52 : 30,326.56 = 12,544.26 : x
2. Step 2: Convert to fraction form
   21,977.52/30,326.56 = 12,544.26/x
3. Step 3: Cross multiply
   21,977.52x = 30,326.56 × 12,544.26
4. Step 4: Simplify right side
   21,977.52x = 380,424,253.55
5. Step 5: Solve for x
   x = 380,424,253.55/21,977.52
6. Step 6: Final answer
   x = 17,309.70