Finding the Fourth Proportional to 12,995.05, 17,931.18 and 7,329.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,995.05 : 17,931.18 = 7,329.55 : x
2. Step 2: Convert to fraction form
   12,995.05/17,931.18 = 7,329.55/x
3. Step 3: Cross multiply
   12,995.05x = 17,931.18 × 7,329.55
4. Step 4: Simplify right side
   12,995.05x = 131,427,480.37
5. Step 5: Solve for x
   x = 131,427,480.37/12,995.05
6. Step 6: Final answer
   x = 10,113.66