Finding the Fourth Proportional to 21,678.94, 32,498.69 and 8,343.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,678.94 : 32,498.69 = 8,343.42 : x
2. Step 2: Convert to fraction form
   21,678.94/32,498.69 = 8,343.42/x
3. Step 3: Cross multiply
   21,678.94x = 32,498.69 × 8,343.42
4. Step 4: Simplify right side
   21,678.94x = 271,150,220.12
5. Step 5: Solve for x
   x = 271,150,220.12/21,678.94
6. Step 6: Final answer
   x = 12,507.54