Finding the Fourth Proportional to 12,380.96, 17,079.72 and 8,192.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,380.96 : 17,079.72 = 8,192.72 : x
2. Step 2: Convert to fraction form
   12,380.96/17,079.72 = 8,192.72/x
3. Step 3: Cross multiply
   12,380.96x = 17,079.72 × 8,192.72
4. Step 4: Simplify right side
   12,380.96x = 139,929,363.64
5. Step 5: Solve for x
   x = 139,929,363.64/12,380.96
6. Step 6: Final answer
   x = 11,301.98