Finding the Fourth Proportional to 8,920.72, 12,315.50 and 6,092.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,920.72 : 12,315.50 = 6,092.34 : x
2. Step 2: Convert to fraction form
   8,920.72/12,315.50 = 6,092.34/x
3. Step 3: Cross multiply
   8,920.72x = 12,315.50 × 6,092.34
4. Step 4: Simplify right side
   8,920.72x = 75,030,213.27
5. Step 5: Solve for x
   x = 75,030,213.27/8,920.72
6. Step 6: Final answer
   x = 8,410.78