Finding the Fourth Proportional to 12,179.34, 16,808.94 and 7,145.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,179.34 : 16,808.94 = 7,145.46 : x
2. Step 2: Convert to fraction form
   12,179.34/16,808.94 = 7,145.46/x
3. Step 3: Cross multiply
   12,179.34x = 16,808.94 × 7,145.46
4. Step 4: Simplify right side
   12,179.34x = 120,107,608.41
5. Step 5: Solve for x
   x = 120,107,608.41/12,179.34
6. Step 6: Final answer
   x = 9,861.59