Finding the Fourth Proportional to 12,993.91, 17,931.59 and 7,025.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,993.91 : 17,931.59 = 7,025.57 : x
2. Step 2: Convert to fraction form
   12,993.91/17,931.59 = 7,025.57/x
3. Step 3: Cross multiply
   12,993.91x = 17,931.59 × 7,025.57
4. Step 4: Simplify right side
   12,993.91x = 125,979,640.76
5. Step 5: Solve for x
   x = 125,979,640.76/12,993.91
6. Step 6: Final answer
   x = 9,695.28