Finding the Fourth Proportional to 21,167.72, 31,754.82 and 5,586.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,167.72 : 31,754.82 = 5,586.56 : x
2. Step 2: Convert to fraction form
   21,167.72/31,754.82 = 5,586.56/x
3. Step 3: Cross multiply
   21,167.72x = 31,754.82 × 5,586.56
4. Step 4: Simplify right side
   21,167.72x = 177,400,207.22
5. Step 5: Solve for x
   x = 177,400,207.22/21,167.72
6. Step 6: Final answer
   x = 8,380.70