Finding the Fourth Proportional to 21,632.79, 32,467.43 and 8,494.39

Step by Step Solution

1. Step 1: Write the proportion equation
   21,632.79 : 32,467.43 = 8,494.39 : x
2. Step 2: Convert to fraction form
   21,632.79/32,467.43 = 8,494.39/x
3. Step 3: Cross multiply
   21,632.79x = 32,467.43 × 8,494.39
4. Step 4: Simplify right side
   21,632.79x = 275,791,012.72
5. Step 5: Solve for x
   x = 275,791,012.72/21,632.79
6. Step 6: Final answer
   x = 12,748.75