Finding the Fourth Proportional to 21,267.86, 29,348.39 and 12,314.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,267.86 : 29,348.39 = 12,314.72 : x
2. Step 2: Convert to fraction form
   21,267.86/29,348.39 = 12,314.72/x
3. Step 3: Cross multiply
   21,267.86x = 29,348.39 × 12,314.72
4. Step 4: Simplify right side
   21,267.86x = 361,417,309.46
5. Step 5: Solve for x
   x = 361,417,309.46/21,267.86
6. Step 6: Final answer
   x = 16,993.59