Finding the Fourth Proportional to 12,301.43, 18,438.15 and 10,817.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,301.43 : 18,438.15 = 10,817.75 : x
2. Step 2: Convert to fraction form
   12,301.43/18,438.15 = 10,817.75/x
3. Step 3: Cross multiply
   12,301.43x = 18,438.15 × 10,817.75
4. Step 4: Simplify right side
   12,301.43x = 199,459,383.82
5. Step 5: Solve for x
   x = 199,459,383.82/12,301.43
6. Step 6: Final answer
   x = 16,214.33