Finding the Fourth Proportional to 23,900.89, 32,984.02 and 13,146.21

Step by Step Solution

1. Step 1: Write the proportion equation
   23,900.89 : 32,984.02 = 13,146.21 : x
2. Step 2: Convert to fraction form
   23,900.89/32,984.02 = 13,146.21/x
3. Step 3: Cross multiply
   23,900.89x = 32,984.02 × 13,146.21
4. Step 4: Simplify right side
   23,900.89x = 433,614,931.84
5. Step 5: Solve for x
   x = 433,614,931.84/23,900.89
6. Step 6: Final answer
   x = 18,142.21