Finding the Fourth Proportional to 12,712.83, 17,542.29 and 7,047.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,712.83 : 17,542.29 = 7,047.42 : x
2. Step 2: Convert to fraction form
   12,712.83/17,542.29 = 7,047.42/x
3. Step 3: Cross multiply
   12,712.83x = 17,542.29 × 7,047.42
4. Step 4: Simplify right side
   12,712.83x = 123,627,885.39
5. Step 5: Solve for x
   x = 123,627,885.39/12,712.83
6. Step 6: Final answer
   x = 9,724.65