Finding the Fourth Proportional to 5,451.89, 7,474.56 and 5,353.47

Step by Step Solution

1. Step 1: Write the proportion equation
   5,451.89 : 7,474.56 = 5,353.47 : x
2. Step 2: Convert to fraction form
   5,451.89/7,474.56 = 5,353.47/x
3. Step 3: Cross multiply
   5,451.89x = 7,474.56 × 5,353.47
4. Step 4: Simplify right side
   5,451.89x = 40,014,832.72
5. Step 5: Solve for x
   x = 40,014,832.72/5,451.89
6. Step 6: Final answer
   x = 7,339.63