Finding the Fourth Proportional to 12,399.52, 17,111.60 and 6,810.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,399.52 : 17,111.60 = 6,810.48 : x
2. Step 2: Convert to fraction form
   12,399.52/17,111.60 = 6,810.48/x
3. Step 3: Cross multiply
   12,399.52x = 17,111.60 × 6,810.48
4. Step 4: Simplify right side
   12,399.52x = 116,538,209.57
5. Step 5: Solve for x
   x = 116,538,209.57/12,399.52
6. Step 6: Final answer
   x = 9,398.61