Finding the Fourth Proportional to 21,225.81, 31,826.52 and 8,754.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,225.81 : 31,826.52 = 8,754.42 : x
2. Step 2: Convert to fraction form
   21,225.81/31,826.52 = 8,754.42/x
3. Step 3: Cross multiply
   21,225.81x = 31,826.52 × 8,754.42
4. Step 4: Simplify right side
   21,225.81x = 278,622,723.22
5. Step 5: Solve for x
   x = 278,622,723.22/21,225.81
6. Step 6: Final answer
   x = 13,126.60