Finding the Fourth Proportional to 12,309.12, 17,000.73 and 8,966.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,309.12 : 17,000.73 = 8,966.88 : x
2. Step 2: Convert to fraction form
   12,309.12/17,000.73 = 8,966.88/x
3. Step 3: Cross multiply
   12,309.12x = 17,000.73 × 8,966.88
4. Step 4: Simplify right side
   12,309.12x = 152,443,505.82
5. Step 5: Solve for x
   x = 152,443,505.82/12,309.12
6. Step 6: Final answer
   x = 12,384.60