Finding the Fourth Proportional to 12,950.16, 17,872.61 and 7,917.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,950.16 : 17,872.61 = 7,917.33 : x
2. Step 2: Convert to fraction form
   12,950.16/17,872.61 = 7,917.33/x
3. Step 3: Cross multiply
   12,950.16x = 17,872.61 × 7,917.33
4. Step 4: Simplify right side
   12,950.16x = 141,503,311.74
5. Step 5: Solve for x
   x = 141,503,311.74/12,950.16
6. Step 6: Final answer
   x = 10,926.76