Finding the Fourth Proportional to 12,298.15, 16,985.55 and 8,955.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,298.15 : 16,985.55 = 8,955.82 : x
2. Step 2: Convert to fraction form
   12,298.15/16,985.55 = 8,955.82/x
3. Step 3: Cross multiply
   12,298.15x = 16,985.55 × 8,955.82
4. Step 4: Simplify right side
   12,298.15x = 152,119,528.40
5. Step 5: Solve for x
   x = 152,119,528.40/12,298.15
6. Step 6: Final answer
   x = 12,369.30