Finding the Fourth Proportional to 12,189.60, 16,824.50 and 7,933.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,189.60 : 16,824.50 = 7,933.32 : x
2. Step 2: Convert to fraction form
   12,189.60/16,824.50 = 7,933.32/x
3. Step 3: Cross multiply
   12,189.60x = 16,824.50 × 7,933.32
4. Step 4: Simplify right side
   12,189.60x = 133,474,142.34
5. Step 5: Solve for x
   x = 133,474,142.34/12,189.60
6. Step 6: Final answer
   x = 10,949.84