Finding the Fourth Proportional to 12,679.83, 19,021.48 and 5,282.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,679.83 : 19,021.48 = 5,282.56 : x
2. Step 2: Convert to fraction form
   12,679.83/19,021.48 = 5,282.56/x
3. Step 3: Cross multiply
   12,679.83x = 19,021.48 × 5,282.56
4. Step 4: Simplify right side
   12,679.83x = 100,482,082.98
5. Step 5: Solve for x
   x = 100,482,082.98/12,679.83
6. Step 6: Final answer
   x = 7,924.56