Finding the Fourth Proportional to 9,278.17, 12,796.41 and 8,156.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,278.17 : 12,796.41 = 8,156.71 : x
2. Step 2: Convert to fraction form
   9,278.17/12,796.41 = 8,156.71/x
3. Step 3: Cross multiply
   9,278.17x = 12,796.41 × 8,156.71
4. Step 4: Simplify right side
   9,278.17x = 104,376,605.41
5. Step 5: Solve for x
   x = 104,376,605.41/9,278.17
6. Step 6: Final answer
   x = 11,249.70