Finding the Fourth Proportional to 8,114.89, 12,162.85 and 7,192.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,114.89 : 12,162.85 = 7,192.25 : x
2. Step 2: Convert to fraction form
   8,114.89/12,162.85 = 7,192.25/x
3. Step 3: Cross multiply
   8,114.89x = 12,162.85 × 7,192.25
4. Step 4: Simplify right side
   8,114.89x = 87,478,257.91
5. Step 5: Solve for x
   x = 87,478,257.91/8,114.89
6. Step 6: Final answer
   x = 10,779.97