Finding the Fourth Proportional to 5,407.31, 7,461.42 and 3,168.67

Step by Step Solution

1. Step 1: Write the proportion equation
   5,407.31 : 7,461.42 = 3,168.67 : x
2. Step 2: Convert to fraction form
   5,407.31/7,461.42 = 3,168.67/x
3. Step 3: Cross multiply
   5,407.31x = 7,461.42 × 3,168.67
4. Step 4: Simplify right side
   5,407.31x = 23,642,796.36
5. Step 5: Solve for x
   x = 23,642,796.36/5,407.31
6. Step 6: Final answer
   x = 4,372.38