Finding the Fourth Proportional to 22,892.19, 31,593.23 and 12,820.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,892.19 : 31,593.23 = 12,820.47 : x
2. Step 2: Convert to fraction form
   22,892.19/31,593.23 = 12,820.47/x
3. Step 3: Cross multiply
   22,892.19x = 31,593.23 × 12,820.47
4. Step 4: Simplify right side
   22,892.19x = 405,040,057.42
5. Step 5: Solve for x
   x = 405,040,057.42/22,892.19
6. Step 6: Final answer
   x = 17,693.37