Finding the Fourth Proportional to 5,898.18, 8,140.28 and 5,399.93

Step by Step Solution

1. Step 1: Write the proportion equation
   5,898.18 : 8,140.28 = 5,399.93 : x
2. Step 2: Convert to fraction form
   5,898.18/8,140.28 = 5,399.93/x
3. Step 3: Cross multiply
   5,898.18x = 8,140.28 × 5,399.93
4. Step 4: Simplify right side
   5,898.18x = 43,956,942.18
5. Step 5: Solve for x
   x = 43,956,942.18/5,898.18
6. Step 6: Final answer
   x = 7,452.63