Finding the Fourth Proportional to 22,891.01, 31,585.41 and 12,819.60

Step by Step Solution

1. Step 1: Write the proportion equation
   22,891.01 : 31,585.41 = 12,819.60 : x
2. Step 2: Convert to fraction form
   22,891.01/31,585.41 = 12,819.60/x
3. Step 3: Cross multiply
   22,891.01x = 31,585.41 × 12,819.60
4. Step 4: Simplify right side
   22,891.01x = 404,912,322.04
5. Step 5: Solve for x
   x = 404,912,322.04/22,891.01
6. Step 6: Final answer
   x = 17,688.71