Finding the Fourth Proportional to 10,969.90, 15,144.55 and 6,942.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,969.90 : 15,144.55 = 6,942.06 : x
2. Step 2: Convert to fraction form
   10,969.90/15,144.55 = 6,942.06/x
3. Step 3: Cross multiply
   10,969.90x = 15,144.55 × 6,942.06
4. Step 4: Simplify right side
   10,969.90x = 105,134,357.42
5. Step 5: Solve for x
   x = 105,134,357.42/10,969.90
6. Step 6: Final answer
   x = 9,583.90