Finding the Fourth Proportional to 21,943.50, 30,282.04 and 12,007.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,943.50 : 30,282.04 = 12,007.50 : x
2. Step 2: Convert to fraction form
   21,943.50/30,282.04 = 12,007.50/x
3. Step 3: Cross multiply
   21,943.50x = 30,282.04 × 12,007.50
4. Step 4: Simplify right side
   21,943.50x = 363,611,595.30
5. Step 5: Solve for x
   x = 363,611,595.30/21,943.50
6. Step 6: Final answer
   x = 16,570.36