Finding the Fourth Proportional to 22,892.68, 31,592.60 and 12,821.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,892.68 : 31,592.60 = 12,821.10 : x
2. Step 2: Convert to fraction form
   22,892.68/31,592.60 = 12,821.10/x
3. Step 3: Cross multiply
   22,892.68x = 31,592.60 × 12,821.10
4. Step 4: Simplify right side
   22,892.68x = 405,051,883.86
5. Step 5: Solve for x
   x = 405,051,883.86/22,892.68
6. Step 6: Final answer
   x = 17,693.51