Finding the Fourth Proportional to 21,211.73, 29,275.79 and 12,264.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,211.73 : 29,275.79 = 12,264.42 : x
2. Step 2: Convert to fraction form
   21,211.73/29,275.79 = 12,264.42/x
3. Step 3: Cross multiply
   21,211.73x = 29,275.79 × 12,264.42
4. Step 4: Simplify right side
   21,211.73x = 359,050,584.39
5. Step 5: Solve for x
   x = 359,050,584.39/21,211.73
6. Step 6: Final answer
   x = 16,926.98