Finding the Fourth Proportional to 21,276.86, 29,363.35 and 12,327.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,276.86 : 29,363.35 = 12,327.18 : x
2. Step 2: Convert to fraction form
   21,276.86/29,363.35 = 12,327.18/x
3. Step 3: Cross multiply
   21,276.86x = 29,363.35 × 12,327.18
4. Step 4: Simplify right side
   21,276.86x = 361,967,300.85
5. Step 5: Solve for x
   x = 361,967,300.85/21,276.86
6. Step 6: Final answer
   x = 17,012.25