Finding the Fourth Proportional to 21,510.72, 32,268.06 and 8,364.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,510.72 : 32,268.06 = 8,364.08 : x
2. Step 2: Convert to fraction form
   21,510.72/32,268.06 = 8,364.08/x
3. Step 3: Cross multiply
   21,510.72x = 32,268.06 × 8,364.08
4. Step 4: Simplify right side
   21,510.72x = 269,892,473.94
5. Step 5: Solve for x
   x = 269,892,473.94/21,510.72
6. Step 6: Final answer
   x = 12,546.88