Finding the Fourth Proportional to 13,424.83, 18,526.86 and 7,456.51

Step by Step Solution

1. Step 1: Write the proportion equation
   13,424.83 : 18,526.86 = 7,456.51 : x
2. Step 2: Convert to fraction form
   13,424.83/18,526.86 = 7,456.51/x
3. Step 3: Cross multiply
   13,424.83x = 18,526.86 × 7,456.51
4. Step 4: Simplify right side
   13,424.83x = 138,145,716.86
5. Step 5: Solve for x
   x = 138,145,716.86/13,424.83
6. Step 6: Final answer
   x = 10,290.31