Finding the Fourth Proportional to 21,426.69, 32,133.81 and 8,276.07

Step by Step Solution

1. Step 1: Write the proportion equation
   21,426.69 : 32,133.81 = 8,276.07 : x
2. Step 2: Convert to fraction form
   21,426.69/32,133.81 = 8,276.07/x
3. Step 3: Cross multiply
   21,426.69x = 32,133.81 × 8,276.07
4. Step 4: Simplify right side
   21,426.69x = 265,941,660.93
5. Step 5: Solve for x
   x = 265,941,660.93/21,426.69
6. Step 6: Final answer
   x = 12,411.70