Finding the Fourth Proportional to 12,607.75, 17,400.77 and 9,617.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,607.75 : 17,400.77 = 9,617.94 : x
2. Step 2: Convert to fraction form
   12,607.75/17,400.77 = 9,617.94/x
3. Step 3: Cross multiply
   12,607.75x = 17,400.77 × 9,617.94
4. Step 4: Simplify right side
   12,607.75x = 167,359,603.89
5. Step 5: Solve for x
   x = 167,359,603.89/12,607.75
6. Step 6: Final answer
   x = 13,274.34