Finding the Fourth Proportional to 13,258.69, 18,296.53 and 7,290.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,258.69 : 18,296.53 = 7,290.34 : x
2. Step 2: Convert to fraction form
   13,258.69/18,296.53 = 7,290.34/x
3. Step 3: Cross multiply
   13,258.69x = 18,296.53 × 7,290.34
4. Step 4: Simplify right side
   13,258.69x = 133,387,860.55
5. Step 5: Solve for x
   x = 133,387,860.55/13,258.69
6. Step 6: Final answer
   x = 10,060.41