Finding the Fourth Proportional to 12,300.50, 16,974.60 and 6,995.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.50 : 16,974.60 = 6,995.31 : x
2. Step 2: Convert to fraction form
   12,300.50/16,974.60 = 6,995.31/x
3. Step 3: Cross multiply
   12,300.50x = 16,974.60 × 6,995.31
4. Step 4: Simplify right side
   12,300.50x = 118,742,589.13
5. Step 5: Solve for x
   x = 118,742,589.13/12,300.50
6. Step 6: Final answer
   x = 9,653.48