Finding the Fourth Proportional to 12,175.31, 16,776.83 and 9,342.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,175.31 : 16,776.83 = 9,342.56 : x
2. Step 2: Convert to fraction form
   12,175.31/16,776.83 = 9,342.56/x
3. Step 3: Cross multiply
   12,175.31x = 16,776.83 × 9,342.56
4. Step 4: Simplify right side
   12,175.31x = 156,738,410.29
5. Step 5: Solve for x
   x = 156,738,410.29/12,175.31
6. Step 6: Final answer
   x = 12,873.47