Finding the Fourth Proportional to 22,888.86, 31,587.15 and 12,817.02

Step by Step Solution

1. Step 1: Write the proportion equation
   22,888.86 : 31,587.15 = 12,817.02 : x
2. Step 2: Convert to fraction form
   22,888.86/31,587.15 = 12,817.02/x
3. Step 3: Cross multiply
   22,888.86x = 31,587.15 × 12,817.02
4. Step 4: Simplify right side
   22,888.86x = 404,853,133.29
5. Step 5: Solve for x
   x = 404,853,133.29/22,888.86
6. Step 6: Final answer
   x = 17,687.78