Finding the Fourth Proportional to 15,994.50, 22,072.43 and 8,921.37

Step by Step Solution

1. Step 1: Write the proportion equation
   15,994.50 : 22,072.43 = 8,921.37 : x
2. Step 2: Convert to fraction form
   15,994.50/22,072.43 = 8,921.37/x
3. Step 3: Cross multiply
   15,994.50x = 22,072.43 × 8,921.37
4. Step 4: Simplify right side
   15,994.50x = 196,916,314.83
5. Step 5: Solve for x
   x = 196,916,314.83/15,994.50
6. Step 6: Final answer
   x = 12,311.50