Finding the Fourth Proportional to 10,256.39, 14,145.77 and 7,424.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,256.39 : 14,145.77 = 7,424.18 : x
2. Step 2: Convert to fraction form
   10,256.39/14,145.77 = 7,424.18/x
3. Step 3: Cross multiply
   10,256.39x = 14,145.77 × 7,424.18
4. Step 4: Simplify right side
   10,256.39x = 105,020,705.60
5. Step 5: Solve for x
   x = 105,020,705.60/10,256.39
6. Step 6: Final answer
   x = 10,239.54