Finding the Fourth Proportional to 13,231.03, 18,258.81 and 7,488.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,231.03 : 18,258.81 = 7,488.38 : x
2. Step 2: Convert to fraction form
   13,231.03/18,258.81 = 7,488.38/x
3. Step 3: Cross multiply
   13,231.03x = 18,258.81 × 7,488.38
4. Step 4: Simplify right side
   13,231.03x = 136,728,967.32
5. Step 5: Solve for x
   x = 136,728,967.32/13,231.03
6. Step 6: Final answer
   x = 10,333.96