Finding the Fourth Proportional to 13,369.21, 18,449.46 and 7,400.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,369.21 : 18,449.46 = 7,400.52 : x
2. Step 2: Convert to fraction form
   13,369.21/18,449.46 = 7,400.52/x
3. Step 3: Cross multiply
   13,369.21x = 18,449.46 × 7,400.52
4. Step 4: Simplify right side
   13,369.21x = 136,535,597.72
5. Step 5: Solve for x
   x = 136,535,597.72/13,369.21
6. Step 6: Final answer
   x = 10,212.69