Finding the Fourth Proportional to 12,722.13, 17,556.54 and 7,056.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,722.13 : 17,556.54 = 7,056.69 : x
2. Step 2: Convert to fraction form
   12,722.13/17,556.54 = 7,056.69/x
3. Step 3: Cross multiply
   12,722.13x = 17,556.54 × 7,056.69
4. Step 4: Simplify right side
   12,722.13x = 123,890,972.47
5. Step 5: Solve for x
   x = 123,890,972.47/12,722.13
6. Step 6: Final answer
   x = 9,738.23