Finding the Fourth Proportional to 21,281.59, 29,366.71 and 12,326.23

Step by Step Solution

1. Step 1: Write the proportion equation
   21,281.59 : 29,366.71 = 12,326.23 : x
2. Step 2: Convert to fraction form
   21,281.59/29,366.71 = 12,326.23/x
3. Step 3: Cross multiply
   21,281.59x = 29,366.71 × 12,326.23
4. Step 4: Simplify right side
   21,281.59x = 361,980,821.80
5. Step 5: Solve for x
   x = 361,980,821.80/21,281.59
6. Step 6: Final answer
   x = 17,009.11