Finding the Fourth Proportional to 6,981.69, 10,473.90 and 3,086.13

Step by Step Solution

1. Step 1: Write the proportion equation
   6,981.69 : 10,473.90 = 3,086.13 : x
2. Step 2: Convert to fraction form
   6,981.69/10,473.90 = 3,086.13/x
3. Step 3: Cross multiply
   6,981.69x = 10,473.90 × 3,086.13
4. Step 4: Simplify right side
   6,981.69x = 32,323,817.01
5. Step 5: Solve for x
   x = 32,323,817.01/6,981.69
6. Step 6: Final answer
   x = 4,629.80