Finding the Fourth Proportional to 21,165.72, 31,751.82 and 5,584.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,165.72 : 31,751.82 = 5,584.56 : x
2. Step 2: Convert to fraction form
   21,165.72/31,751.82 = 5,584.56/x
3. Step 3: Cross multiply
   21,165.72x = 31,751.82 × 5,584.56
4. Step 4: Simplify right side
   21,165.72x = 177,319,943.90
5. Step 5: Solve for x
   x = 177,319,943.90/21,165.72
6. Step 6: Final answer
   x = 8,377.69