Finding the Fourth Proportional to 12,479.56, 17,222.70 and 7,176.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,479.56 : 17,222.70 = 7,176.04 : x
2. Step 2: Convert to fraction form
   12,479.56/17,222.70 = 7,176.04/x
3. Step 3: Cross multiply
   12,479.56x = 17,222.70 × 7,176.04
4. Step 4: Simplify right side
   12,479.56x = 123,590,784.11
5. Step 5: Solve for x
   x = 123,590,784.11/12,479.56
6. Step 6: Final answer
   x = 9,903.46