Finding the Fourth Proportional to 12,669.96, 17,490.78 and 7,956.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,669.96 : 17,490.78 = 7,956.84 : x
2. Step 2: Convert to fraction form
   12,669.96/17,490.78 = 7,956.84/x
3. Step 3: Cross multiply
   12,669.96x = 17,490.78 × 7,956.84
4. Step 4: Simplify right side
   12,669.96x = 139,171,337.94
5. Step 5: Solve for x
   x = 139,171,337.94/12,669.96
6. Step 6: Final answer
   x = 10,984.35