Finding the Fourth Proportional to 22,880.61, 31,572.59 and 12,809.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,880.61 : 31,572.59 = 12,809.61 : x
2. Step 2: Convert to fraction form
   22,880.61/31,572.59 = 12,809.61/x
3. Step 3: Cross multiply
   22,880.61x = 31,572.59 × 12,809.61
4. Step 4: Simplify right side
   22,880.61x = 404,432,500.54
5. Step 5: Solve for x
   x = 404,432,500.54/22,880.61
6. Step 6: Final answer
   x = 17,675.77