Finding the Fourth Proportional to 7,013.76, 9,678.58 and 3,869.94

Step by Step Solution

1. Step 1: Write the proportion equation
   7,013.76 : 9,678.58 = 3,869.94 : x
2. Step 2: Convert to fraction form
   7,013.76/9,678.58 = 3,869.94/x
3. Step 3: Cross multiply
   7,013.76x = 9,678.58 × 3,869.94
4. Step 4: Simplify right side
   7,013.76x = 37,455,523.89
5. Step 5: Solve for x
   x = 37,455,523.89/7,013.76
6. Step 6: Final answer
   x = 5,340.29