Finding the Fourth Proportional to 5,106.52, 7,046.81 and 3,120.40

Step by Step Solution

1. Step 1: Write the proportion equation
   5,106.52 : 7,046.81 = 3,120.40 : x
2. Step 2: Convert to fraction form
   5,106.52/7,046.81 = 3,120.40/x
3. Step 3: Cross multiply
   5,106.52x = 7,046.81 × 3,120.40
4. Step 4: Simplify right side
   5,106.52x = 21,988,830.69
5. Step 5: Solve for x
   x = 21,988,830.69/5,106.52
6. Step 6: Final answer
   x = 4,306.03