Finding the Fourth Proportional to 22,608.40, 31,212.12 and 15,064.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,608.40 : 31,212.12 = 15,064.96 : x
2. Step 2: Convert to fraction form
   22,608.40/31,212.12 = 15,064.96/x
3. Step 3: Cross multiply
   22,608.40x = 31,212.12 × 15,064.96
4. Step 4: Simplify right side
   22,608.40x = 470,209,339.32
5. Step 5: Solve for x
   x = 470,209,339.32/22,608.40
6. Step 6: Final answer
   x = 20,797.99