Finding the Fourth Proportional to 3,980.93, 5,972.31 and 3,914.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,980.93 : 5,972.31 = 3,914.81 : x
2. Step 2: Convert to fraction form
   3,980.93/5,972.31 = 3,914.81/x
3. Step 3: Cross multiply
   3,980.93x = 5,972.31 × 3,914.81
4. Step 4: Simplify right side
   3,980.93x = 23,380,429.05
5. Step 5: Solve for x
   x = 23,380,429.05/3,980.93
6. Step 6: Final answer
   x = 5,873.11