Finding the Fourth Proportional to 15,647.31, 21,595.83 and 8,933.22

Step by Step Solution

1. Step 1: Write the proportion equation
   15,647.31 : 21,595.83 = 8,933.22 : x
2. Step 2: Convert to fraction form
   15,647.31/21,595.83 = 8,933.22/x
3. Step 3: Cross multiply
   15,647.31x = 21,595.83 × 8,933.22
4. Step 4: Simplify right side
   15,647.31x = 192,920,300.47
5. Step 5: Solve for x
   x = 192,920,300.47/15,647.31
6. Step 6: Final answer
   x = 12,329.29