Finding the Fourth Proportional to 12,996, 17,934.84 and 7,407

Step by Step Solution

1. Step 1: Write the proportion equation
   12,996 : 17,934.84 = 7,407 : x
2. Step 2: Convert to fraction form
   12,996/17,934.84 = 7,407/x
3. Step 3: Cross multiply
   12,996x = 17,934.84 × 7,407
4. Step 4: Simplify right side
   12,996x = 132,843,359.88
5. Step 5: Solve for x
   x = 132,843,359.88/12,996
6. Step 6: Final answer
   x = 10,221.87