Finding the Fourth Proportional to 10,119.43, 13,964.43 and 5,643.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,119.43 : 13,964.43 = 5,643.10 : x
2. Step 2: Convert to fraction form
   10,119.43/13,964.43 = 5,643.10/x
3. Step 3: Cross multiply
   10,119.43x = 13,964.43 × 5,643.10
4. Step 4: Simplify right side
   10,119.43x = 78,802,674.93
5. Step 5: Solve for x
   x = 78,802,674.93/10,119.43
6. Step 6: Final answer
   x = 7,787.26