Finding the Fourth Proportional to 12,993.72, 17,931.34 and 7,025.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,993.72 : 17,931.34 = 7,025.39 : x
2. Step 2: Convert to fraction form
   12,993.72/17,931.34 = 7,025.39/x
3. Step 3: Cross multiply
   12,993.72x = 17,931.34 × 7,025.39
4. Step 4: Simplify right side
   12,993.72x = 125,974,683.99
5. Step 5: Solve for x
   x = 125,974,683.99/12,993.72
6. Step 6: Final answer
   x = 9,695.04