Finding the Fourth Proportional to 13,256.82, 18,294.42 and 7,288.59

Step by Step Solution

1. Step 1: Write the proportion equation
   13,256.82 : 18,294.42 = 7,288.59 : x
2. Step 2: Convert to fraction form
   13,256.82/18,294.42 = 7,288.59/x
3. Step 3: Cross multiply
   13,256.82x = 18,294.42 × 7,288.59
4. Step 4: Simplify right side
   13,256.82x = 133,340,526.67
5. Step 5: Solve for x
   x = 133,340,526.67/13,256.82
6. Step 6: Final answer
   x = 10,058.26