Finding the Fourth Proportional to 21,578.21, 32,364.96 and 5,784.79

Step by Step Solution

1. Step 1: Write the proportion equation
   21,578.21 : 32,364.96 = 5,784.79 : x
2. Step 2: Convert to fraction form
   21,578.21/32,364.96 = 5,784.79/x
3. Step 3: Cross multiply
   21,578.21x = 32,364.96 × 5,784.79
4. Step 4: Simplify right side
   21,578.21x = 187,224,496.96
5. Step 5: Solve for x
   x = 187,224,496.96/21,578.21
6. Step 6: Final answer
   x = 8,676.55