Finding the Fourth Proportional to 12,997.12, 17,931.36 and 7,404.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,997.12 : 17,931.36 = 7,404.88 : x
2. Step 2: Convert to fraction form
   12,997.12/17,931.36 = 7,404.88/x
3. Step 3: Cross multiply
   12,997.12x = 17,931.36 × 7,404.88
4. Step 4: Simplify right side
   12,997.12x = 132,779,569.04
5. Step 5: Solve for x
   x = 132,779,569.04/12,997.12
6. Step 6: Final answer
   x = 10,216.08