Finding the Fourth Proportional to 13,369.42, 18,449.89 and 7,401.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,369.42 : 18,449.89 = 7,401.18 : x
2. Step 2: Convert to fraction form
   13,369.42/18,449.89 = 7,401.18/x
3. Step 3: Cross multiply
   13,369.42x = 18,449.89 × 7,401.18
4. Step 4: Simplify right side
   13,369.42x = 136,550,956.87
5. Step 5: Solve for x
   x = 136,550,956.87/13,369.42
6. Step 6: Final answer
   x = 10,213.68