Finding the Fourth Proportional to 22,578.04, 31,155.94 and 12,505.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,578.04 : 31,155.94 = 12,505.69 : x
2. Step 2: Convert to fraction form
   22,578.04/31,155.94 = 12,505.69/x
3. Step 3: Cross multiply
   22,578.04x = 31,155.94 × 12,505.69
4. Step 4: Simplify right side
   22,578.04x = 389,626,581.88
5. Step 5: Solve for x
   x = 389,626,581.88/22,578.04
6. Step 6: Final answer
   x = 17,256.88