Finding the Fourth Proportional to 4,891.34, 7,333.42 and 3,138.32

Step by Step Solution

1. Step 1: Write the proportion equation
   4,891.34 : 7,333.42 = 3,138.32 : x
2. Step 2: Convert to fraction form
   4,891.34/7,333.42 = 3,138.32/x
3. Step 3: Cross multiply
   4,891.34x = 7,333.42 × 3,138.32
4. Step 4: Simplify right side
   4,891.34x = 23,014,618.65
5. Step 5: Solve for x
   x = 23,014,618.65/4,891.34
6. Step 6: Final answer
   x = 4,705.18