Finding the Fourth Proportional to 10,238.24, 14,128.56 and 6,259.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,238.24 : 14,128.56 = 6,259.40 : x
2. Step 2: Convert to fraction form
   10,238.24/14,128.56 = 6,259.40/x
3. Step 3: Cross multiply
   10,238.24x = 14,128.56 × 6,259.40
4. Step 4: Simplify right side
   10,238.24x = 88,436,308.46
5. Step 5: Solve for x
   x = 88,436,308.46/10,238.24
6. Step 6: Final answer
   x = 8,637.84