Finding the Fourth Proportional to 13,258.98, 18,297.27 and 7,290.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,258.98 : 18,297.27 = 7,290.72 : x
2. Step 2: Convert to fraction form
   13,258.98/18,297.27 = 7,290.72/x
3. Step 3: Cross multiply
   13,258.98x = 18,297.27 × 7,290.72
4. Step 4: Simplify right side
   13,258.98x = 133,400,272.33
5. Step 5: Solve for x
   x = 133,400,272.33/13,258.98
6. Step 6: Final answer
   x = 10,061.13