Finding the Fourth Proportional to 4,980.39, 6,870.06 and 3,114.15

Step by Step Solution

1. Step 1: Write the proportion equation
   4,980.39 : 6,870.06 = 3,114.15 : x
2. Step 2: Convert to fraction form
   4,980.39/6,870.06 = 3,114.15/x
3. Step 3: Cross multiply
   4,980.39x = 6,870.06 × 3,114.15
4. Step 4: Simplify right side
   4,980.39x = 21,394,397.35
5. Step 5: Solve for x
   x = 21,394,397.35/4,980.39
6. Step 6: Final answer
   x = 4,295.73