Finding the Fourth Proportional to 10,505.40, 15,763.02 and 5,240.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,505.40 : 15,763.02 = 5,240.82 : x
2. Step 2: Convert to fraction form
   10,505.40/15,763.02 = 5,240.82/x
3. Step 3: Cross multiply
   10,505.40x = 15,763.02 × 5,240.82
4. Step 4: Simplify right side
   10,505.40x = 82,611,150.48
5. Step 5: Solve for x
   x = 82,611,150.48/10,505.40
6. Step 6: Final answer
   x = 7,863.68