Finding the Fourth Proportional to 21,679.59, 32,523.50 and 12,330.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,679.59 : 32,523.50 = 12,330.16 : x
2. Step 2: Convert to fraction form
   21,679.59/32,523.50 = 12,330.16/x
3. Step 3: Cross multiply
   21,679.59x = 32,523.50 × 12,330.16
4. Step 4: Simplify right side
   21,679.59x = 401,019,958.76
5. Step 5: Solve for x
   x = 401,019,958.76/21,679.59
6. Step 6: Final answer
   x = 18,497.58