Finding the Fourth Proportional to 12,980.25, 17,912.75 and 7,392.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.25 : 17,912.75 = 7,392.33 : x
2. Step 2: Convert to fraction form
   12,980.25/17,912.75 = 7,392.33/x
3. Step 3: Cross multiply
   12,980.25x = 17,912.75 × 7,392.33
4. Step 4: Simplify right side
   12,980.25x = 132,416,922.25
5. Step 5: Solve for x
   x = 132,416,922.25/12,980.25
6. Step 6: Final answer
   x = 10,201.42