Finding the Fourth Proportional to 12,776.76, 19,169.31 and 5,383.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,776.76 : 19,169.31 = 5,383.29 : x
2. Step 2: Convert to fraction form
   12,776.76/19,169.31 = 5,383.29/x
3. Step 3: Cross multiply
   12,776.76x = 19,169.31 × 5,383.29
4. Step 4: Simplify right side
   12,776.76x = 103,193,954.83
5. Step 5: Solve for x
   x = 103,193,954.83/12,776.76
6. Step 6: Final answer
   x = 8,076.69