Finding the Fourth Proportional to 12,722.72, 19,078.02 and 4,714.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,722.72 : 19,078.02 = 4,714.88 : x
2. Step 2: Convert to fraction form
   12,722.72/19,078.02 = 4,714.88/x
3. Step 3: Cross multiply
   12,722.72x = 19,078.02 × 4,714.88
4. Step 4: Simplify right side
   12,722.72x = 89,950,574.94
5. Step 5: Solve for x
   x = 89,950,574.94/12,722.72
6. Step 6: Final answer
   x = 7,070.07