Finding the Fourth Proportional to 21,264.62, 29,351.61 and 12,314.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,264.62 : 29,351.61 = 12,314.31 : x
2. Step 2: Convert to fraction form
   21,264.62/29,351.61 = 12,314.31/x
3. Step 3: Cross multiply
   21,264.62x = 29,351.61 × 12,314.31
4. Step 4: Simplify right side
   21,264.62x = 361,444,824.54
5. Step 5: Solve for x
   x = 361,444,824.54/21,264.62
6. Step 6: Final answer
   x = 16,997.48