Finding the Fourth Proportional to 12,976.25, 19,471.79 and 5,079.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,976.25 : 19,471.79 = 5,079.42 : x
2. Step 2: Convert to fraction form
   12,976.25/19,471.79 = 5,079.42/x
3. Step 3: Cross multiply
   12,976.25x = 19,471.79 × 5,079.42
4. Step 4: Simplify right side
   12,976.25x = 98,905,399.56
5. Step 5: Solve for x
   x = 98,905,399.56/12,976.25
6. Step 6: Final answer
   x = 7,622.03