Finding the Fourth Proportional to 6,897.69, 10,338.01 and 3,938.61

Step by Step Solution

1. Step 1: Write the proportion equation
   6,897.69 : 10,338.01 = 3,938.61 : x
2. Step 2: Convert to fraction form
   6,897.69/10,338.01 = 3,938.61/x
3. Step 3: Cross multiply
   6,897.69x = 10,338.01 × 3,938.61
4. Step 4: Simplify right side
   6,897.69x = 40,717,389.57
5. Step 5: Solve for x
   x = 40,717,389.57/6,897.69
6. Step 6: Final answer
   x = 5,903.05