Finding the Fourth Proportional to 19,379.52, 29,064.32 and 8,280.72

Step by Step Solution

1. Step 1: Write the proportion equation
   19,379.52 : 29,064.32 = 8,280.72 : x
2. Step 2: Convert to fraction form
   19,379.52/29,064.32 = 8,280.72/x
3. Step 3: Cross multiply
   19,379.52x = 29,064.32 × 8,280.72
4. Step 4: Simplify right side
   19,379.52x = 240,673,495.91
5. Step 5: Solve for x
   x = 240,673,495.91/19,379.52
6. Step 6: Final answer
   x = 12,418.96