Finding the Fourth Proportional to 7,098.69, 10,634.39 and 3,969.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,098.69 : 10,634.39 = 3,969.20 : x
2. Step 2: Convert to fraction form
   7,098.69/10,634.39 = 3,969.20/x
3. Step 3: Cross multiply
   7,098.69x = 10,634.39 × 3,969.20
4. Step 4: Simplify right side
   7,098.69x = 42,210,042.41
5. Step 5: Solve for x
   x = 42,210,042.41/7,098.69
6. Step 6: Final answer
   x = 5,946.17