Finding the Fourth Proportional to 21,578.72, 32,368.16 and 5,996.40

Step by Step Solution

1. Step 1: Write the proportion equation
   21,578.72 : 32,368.16 = 5,996.40 : x
2. Step 2: Convert to fraction form
   21,578.72/32,368.16 = 5,996.40/x
3. Step 3: Cross multiply
   21,578.72x = 32,368.16 × 5,996.40
4. Step 4: Simplify right side
   21,578.72x = 194,092,434.62
5. Step 5: Solve for x
   x = 194,092,434.62/21,578.72
6. Step 6: Final answer
   x = 8,994.62