Finding the Fourth Proportional to 4,875.49, 6,729.89 and 3,106.76

Step by Step Solution

1. Step 1: Write the proportion equation
   4,875.49 : 6,729.89 = 3,106.76 : x
2. Step 2: Convert to fraction form
   4,875.49/6,729.89 = 3,106.76/x
3. Step 3: Cross multiply
   4,875.49x = 6,729.89 × 3,106.76
4. Step 4: Simplify right side
   4,875.49x = 20,908,103.87
5. Step 5: Solve for x
   x = 20,908,103.87/4,875.49
6. Step 6: Final answer
   x = 4,288.41