Finding the Fourth Proportional to 14,979.36, 22,472.56 and 5,118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,979.36 : 22,472.56 = 5,118.72 : x
2. Step 2: Convert to fraction form
   14,979.36/22,472.56 = 5,118.72/x
3. Step 3: Cross multiply
   14,979.36x = 22,472.56 × 5,118.72
4. Step 4: Simplify right side
   14,979.36x = 115,030,742.32
5. Step 5: Solve for x
   x = 115,030,742.32/14,979.36
6. Step 6: Final answer
   x = 7,679.28