Finding the Fourth Proportional to 12,315.72, 16,995.78 and 7,010.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,315.72 : 16,995.78 = 7,010.58 : x
2. Step 2: Convert to fraction form
   12,315.72/16,995.78 = 7,010.58/x
3. Step 3: Cross multiply
   12,315.72x = 16,995.78 × 7,010.58
4. Step 4: Simplify right side
   12,315.72x = 119,150,275.35
5. Step 5: Solve for x
   x = 119,150,275.35/12,315.72
6. Step 6: Final answer
   x = 9,674.65