Finding the Fourth Proportional to 12,719.34, 19,067.85 and 4,393.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,719.34 : 19,067.85 = 4,393.62 : x
2. Step 2: Convert to fraction form
   12,719.34/19,067.85 = 4,393.62/x
3. Step 3: Cross multiply
   12,719.34x = 19,067.85 × 4,393.62
4. Step 4: Simplify right side
   12,719.34x = 83,776,887.12
5. Step 5: Solve for x
   x = 83,776,887.12/12,719.34
6. Step 6: Final answer
   x = 6,586.58