Finding the Fourth Proportional to 12,483.56, 17,229.04 and 7,178.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,483.56 : 17,229.04 = 7,178.28 : x
2. Step 2: Convert to fraction form
   12,483.56/17,229.04 = 7,178.28/x
3. Step 3: Cross multiply
   12,483.56x = 17,229.04 × 7,178.28
4. Step 4: Simplify right side
   12,483.56x = 123,674,873.25
5. Step 5: Solve for x
   x = 123,674,873.25/12,483.56
6. Step 6: Final answer
   x = 9,907.02