Finding the Fourth Proportional to 12,713.12, 17,543.40 and 7,047.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,713.12 : 17,543.40 = 7,047.68 : x
2. Step 2: Convert to fraction form
   12,713.12/17,543.40 = 7,047.68/x
3. Step 3: Cross multiply
   12,713.12x = 17,543.40 × 7,047.68
4. Step 4: Simplify right side
   12,713.12x = 123,640,269.31
5. Step 5: Solve for x
   x = 123,640,269.31/12,713.12
6. Step 6: Final answer
   x = 9,725.41