Finding the Fourth Proportional to 8,124.72, 11,234.20 and 7,992.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,124.72 : 11,234.20 = 7,992.88 : x
2. Step 2: Convert to fraction form
   8,124.72/11,234.20 = 7,992.88/x
3. Step 3: Cross multiply
   8,124.72x = 11,234.20 × 7,992.88
4. Step 4: Simplify right side
   8,124.72x = 89,793,612.50
5. Step 5: Solve for x
   x = 89,793,612.50/8,124.72
6. Step 6: Final answer
   x = 11,051.90