Finding the Fourth Proportional to 12,399.04, 17,111.28 and 6,810.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,399.04 : 17,111.28 = 6,810.16 : x
2. Step 2: Convert to fraction form
   12,399.04/17,111.28 = 6,810.16/x
3. Step 3: Cross multiply
   12,399.04x = 17,111.28 × 6,810.16
4. Step 4: Simplify right side
   12,399.04x = 116,530,554.60
5. Step 5: Solve for x
   x = 116,530,554.60/12,399.04
6. Step 6: Final answer
   x = 9,398.35