Finding the Fourth Proportional to 12,796.60, 19,162.14 and 7,851.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,796.60 : 19,162.14 = 7,851.28 : x
2. Step 2: Convert to fraction form
   12,796.60/19,162.14 = 7,851.28/x
3. Step 3: Cross multiply
   12,796.60x = 19,162.14 × 7,851.28
4. Step 4: Simplify right side
   12,796.60x = 150,447,326.54
5. Step 5: Solve for x
   x = 150,447,326.54/12,796.60
6. Step 6: Final answer
   x = 11,756.82