Finding the Fourth Proportional to 21,564.79, 32,327.94 and 8,414.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,564.79 : 32,327.94 = 8,414.10 : x
2. Step 2: Convert to fraction form
   21,564.79/32,327.94 = 8,414.10/x
3. Step 3: Cross multiply
   21,564.79x = 32,327.94 × 8,414.10
4. Step 4: Simplify right side
   21,564.79x = 272,010,551.51
5. Step 5: Solve for x
   x = 272,010,551.51/21,564.79
6. Step 6: Final answer
   x = 12,613.64