Finding the Fourth Proportional to 13,427.24, 18,529.37 and 7,458.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,427.24 : 18,529.37 = 7,458.78 : x
2. Step 2: Convert to fraction form
   13,427.24/18,529.37 = 7,458.78/x
3. Step 3: Cross multiply
   13,427.24x = 18,529.37 × 7,458.78
4. Step 4: Simplify right side
   13,427.24x = 138,206,494.37
5. Step 5: Solve for x
   x = 138,206,494.37/13,427.24
6. Step 6: Final answer
   x = 10,292.99