Finding the Fourth Proportional to 10,768.95, 16,142.29 and 7,800.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,768.95 : 16,142.29 = 7,800.10 : x
2. Step 2: Convert to fraction form
   10,768.95/16,142.29 = 7,800.10/x
3. Step 3: Cross multiply
   10,768.95x = 16,142.29 × 7,800.10
4. Step 4: Simplify right side
   10,768.95x = 125,911,416.37
5. Step 5: Solve for x
   x = 125,911,416.37/10,768.95
6. Step 6: Final answer
   x = 11,692.08