Finding the Fourth Proportional to 12,992.86, 17,930.22 and 7,327.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,992.86 : 17,930.22 = 7,327.72 : x
2. Step 2: Convert to fraction form
   12,992.86/17,930.22 = 7,327.72/x
3. Step 3: Cross multiply
   12,992.86x = 17,930.22 × 7,327.72
4. Step 4: Simplify right side
   12,992.86x = 131,387,631.70
5. Step 5: Solve for x
   x = 131,387,631.70/12,992.86
6. Step 6: Final answer
   x = 10,112.29