Finding the Fourth Proportional to 14,123.11, 21,151.25 and 12,264.12

Step by Step Solution

1. Step 1: Write the proportion equation
   14,123.11 : 21,151.25 = 12,264.12 : x
2. Step 2: Convert to fraction form
   14,123.11/21,151.25 = 12,264.12/x
3. Step 3: Cross multiply
   14,123.11x = 21,151.25 × 12,264.12
4. Step 4: Simplify right side
   14,123.11x = 259,401,498.81
5. Step 5: Solve for x
   x = 259,401,498.81/14,123.11
6. Step 6: Final answer
   x = 18,367.17