Finding the Fourth Proportional to 22,164.04, 30,590.18 and 21,167.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,164.04 : 30,590.18 = 21,167.56 : x
2. Step 2: Convert to fraction form
   22,164.04/30,590.18 = 21,167.56/x
3. Step 3: Cross multiply
   22,164.04x = 30,590.18 × 21,167.56
4. Step 4: Simplify right side
   22,164.04x = 647,519,470.56
5. Step 5: Solve for x
   x = 647,519,470.56/22,164.04
6. Step 6: Final answer
   x = 29,214.87