Finding the Fourth Proportional to 10,512.06, 15,776.18 and 7,850.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,512.06 : 15,776.18 = 7,850.30 : x
2. Step 2: Convert to fraction form
   10,512.06/15,776.18 = 7,850.30/x
3. Step 3: Cross multiply
   10,512.06x = 15,776.18 × 7,850.30
4. Step 4: Simplify right side
   10,512.06x = 123,847,745.85
5. Step 5: Solve for x
   x = 123,847,745.85/10,512.06
6. Step 6: Final answer
   x = 11,781.49