Finding the Fourth Proportional to 21,034.37, 31,557.52 and 8,563.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,034.37 : 31,557.52 = 8,563.34 : x
2. Step 2: Convert to fraction form
   21,034.37/31,557.52 = 8,563.34/x
3. Step 3: Cross multiply
   21,034.37x = 31,557.52 × 8,563.34
4. Step 4: Simplify right side
   21,034.37x = 270,237,773.32
5. Step 5: Solve for x
   x = 270,237,773.32/21,034.37
6. Step 6: Final answer
   x = 12,847.44