Finding the Fourth Proportional to 13,369.58, 18,449.80 and 7,401.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,369.58 : 18,449.80 = 7,401.12 : x
2. Step 2: Convert to fraction form
   13,369.58/18,449.80 = 7,401.12/x
3. Step 3: Cross multiply
   13,369.58x = 18,449.80 × 7,401.12
4. Step 4: Simplify right side
   13,369.58x = 136,549,183.78
5. Step 5: Solve for x
   x = 136,549,183.78/13,369.58
6. Step 6: Final answer
   x = 10,213.42