Finding the Fourth Proportional to 12,722.02, 17,555.96 and 7,056.74

Step by Step Solution

1. Step 1: Write the proportion equation
   12,722.02 : 17,555.96 = 7,056.74 : x
2. Step 2: Convert to fraction form
   12,722.02/17,555.96 = 7,056.74/x
3. Step 3: Cross multiply
   12,722.02x = 17,555.96 × 7,056.74
4. Step 4: Simplify right side
   12,722.02x = 123,887,845.17
5. Step 5: Solve for x
   x = 123,887,845.17/12,722.02
6. Step 6: Final answer
   x = 9,738.06