Finding the Fourth Proportional to 21,406.76, 32,112.88 and 8,262.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,406.76 : 32,112.88 = 8,262.89 : x
2. Step 2: Convert to fraction form
   21,406.76/32,112.88 = 8,262.89/x
3. Step 3: Cross multiply
   21,406.76x = 32,112.88 × 8,262.89
4. Step 4: Simplify right side
   21,406.76x = 265,345,153.71
5. Step 5: Solve for x
   x = 265,345,153.71/21,406.76
6. Step 6: Final answer
   x = 12,395.39