Finding the Fourth Proportional to 21,648.65, 32,474.12 and 6,856.43

Step by Step Solution

1. Step 1: Write the proportion equation
   21,648.65 : 32,474.12 = 6,856.43 : x
2. Step 2: Convert to fraction form
   21,648.65/32,474.12 = 6,856.43/x
3. Step 3: Cross multiply
   21,648.65x = 32,474.12 × 6,856.43
4. Step 4: Simplify right side
   21,648.65x = 222,656,333.94
5. Step 5: Solve for x
   x = 222,656,333.94/21,648.65
6. Step 6: Final answer
   x = 10,285.00