Finding the Fourth Proportional to 12,722.07, 17,556.52 and 7,056.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,722.07 : 17,556.52 = 7,056.43 : x
2. Step 2: Convert to fraction form
   12,722.07/17,556.52 = 7,056.43/x
3. Step 3: Cross multiply
   12,722.07x = 17,556.52 × 7,056.43
4. Step 4: Simplify right side
   12,722.07x = 123,886,354.42
5. Step 5: Solve for x
   x = 123,886,354.42/12,722.07
6. Step 6: Final answer
   x = 9,737.91