Finding the Fourth Proportional to 13,253.37, 18,288.55 and 7,586.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,253.37 : 18,288.55 = 7,586.81 : x
2. Step 2: Convert to fraction form
   13,253.37/18,288.55 = 7,586.81/x
3. Step 3: Cross multiply
   13,253.37x = 18,288.55 × 7,586.81
4. Step 4: Simplify right side
   13,253.37x = 138,751,754.03
5. Step 5: Solve for x
   x = 138,751,754.03/13,253.37
6. Step 6: Final answer
   x = 10,469.17