Finding the Fourth Proportional to 10,015.42, 13,821.72 and 6,240.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,015.42 : 13,821.72 = 6,240.82 : x
2. Step 2: Convert to fraction form
   10,015.42/13,821.72 = 6,240.82/x
3. Step 3: Cross multiply
   10,015.42x = 13,821.72 × 6,240.82
4. Step 4: Simplify right side
   10,015.42x = 86,258,866.61
5. Step 5: Solve for x
   x = 86,258,866.61/10,015.42
6. Step 6: Final answer
   x = 8,612.61