Finding the Fourth Proportional to 4,938.69, 6,814.72 and 3,172.69

Step by Step Solution

1. Step 1: Write the proportion equation
   4,938.69 : 6,814.72 = 3,172.69 : x
2. Step 2: Convert to fraction form
   4,938.69/6,814.72 = 3,172.69/x
3. Step 3: Cross multiply
   4,938.69x = 6,814.72 × 3,172.69
4. Step 4: Simplify right side
   4,938.69x = 21,620,994.00
5. Step 5: Solve for x
   x = 21,620,994.00/4,938.69
6. Step 6: Final answer
   x = 4,377.88