Finding the Fourth Proportional to 22,887, 31,585.95 and 12,817.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,887 : 31,585.95 = 12,817.76 : x
2. Step 2: Convert to fraction form
   22,887/31,585.95 = 12,817.76/x
3. Step 3: Cross multiply
   22,887x = 31,585.95 × 12,817.76
4. Step 4: Simplify right side
   22,887x = 404,860,968.54
5. Step 5: Solve for x
   x = 404,860,968.54/22,887
6. Step 6: Final answer
   x = 17,689.56