Finding the Fourth Proportional to 13,255.63, 18,293.24 and 7,591.39

Step by Step Solution

1. Step 1: Write the proportion equation
   13,255.63 : 18,293.24 = 7,591.39 : x
2. Step 2: Convert to fraction form
   13,255.63/18,293.24 = 7,591.39/x
3. Step 3: Cross multiply
   13,255.63x = 18,293.24 × 7,591.39
4. Step 4: Simplify right side
   13,255.63x = 138,871,119.20
5. Step 5: Solve for x
   x = 138,871,119.20/13,255.63
6. Step 6: Final answer
   x = 10,476.39