Finding the Fourth Proportional to 12,426.58, 17,149.89 and 9,277.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.58 : 17,149.89 = 9,277.30 : x
2. Step 2: Convert to fraction form
   12,426.58/17,149.89 = 9,277.30/x
3. Step 3: Cross multiply
   12,426.58x = 17,149.89 × 9,277.30
4. Step 4: Simplify right side
   12,426.58x = 159,104,674.50
5. Step 5: Solve for x
   x = 159,104,674.50/12,426.58
6. Step 6: Final answer
   x = 12,803.58