Finding the Fourth Proportional to 10,608.42, 15,912.72 and 3,213.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,608.42 : 15,912.72 = 3,213.46 : x
2. Step 2: Convert to fraction form
   10,608.42/15,912.72 = 3,213.46/x
3. Step 3: Cross multiply
   10,608.42x = 15,912.72 × 3,213.46
4. Step 4: Simplify right side
   10,608.42x = 51,134,889.21
5. Step 5: Solve for x
   x = 51,134,889.21/10,608.42
6. Step 6: Final answer
   x = 4,820.22