Finding the Fourth Proportional to 22,820.82, 31,492.73 and 12,884.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,820.82 : 31,492.73 = 12,884.82 : x
2. Step 2: Convert to fraction form
   22,820.82/31,492.73 = 12,884.82/x
3. Step 3: Cross multiply
   22,820.82x = 31,492.73 × 12,884.82
4. Step 4: Simplify right side
   22,820.82x = 405,778,092.93
5. Step 5: Solve for x
   x = 405,778,092.93/22,820.82
6. Step 6: Final answer
   x = 17,781.05