Finding the Fourth Proportional to 12,298.94, 18,448.41 and 5,274.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,298.94 : 18,448.41 = 5,274.42 : x
2. Step 2: Convert to fraction form
   12,298.94/18,448.41 = 5,274.42/x
3. Step 3: Cross multiply
   12,298.94x = 18,448.41 × 5,274.42
4. Step 4: Simplify right side
   12,298.94x = 97,304,570.43
5. Step 5: Solve for x
   x = 97,304,570.43/12,298.94
6. Step 6: Final answer
   x = 7,911.63