Finding the Fourth Proportional to 5,419.58, 7,477.92 and 4,162.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,419.58 : 7,477.92 = 4,162.05 : x
2. Step 2: Convert to fraction form
   5,419.58/7,477.92 = 4,162.05/x
3. Step 3: Cross multiply
   5,419.58x = 7,477.92 × 4,162.05
4. Step 4: Simplify right side
   5,419.58x = 31,123,476.94
5. Step 5: Solve for x
   x = 31,123,476.94/5,419.58
6. Step 6: Final answer
   x = 5,742.79