Finding the Fourth Proportional to 12,756.68, 17,605.86 and 7,168.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,756.68 : 17,605.86 = 7,168.76 : x
2. Step 2: Convert to fraction form
   12,756.68/17,605.86 = 7,168.76/x
3. Step 3: Cross multiply
   12,756.68x = 17,605.86 × 7,168.76
4. Step 4: Simplify right side
   12,756.68x = 126,212,184.93
5. Step 5: Solve for x
   x = 126,212,184.93/12,756.68
6. Step 6: Final answer
   x = 9,893.81