Finding the Fourth Proportional to 22,162.16, 30,641.40 and 21,182.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,162.16 : 30,641.40 = 21,182.96 : x
2. Step 2: Convert to fraction form
   22,162.16/30,641.40 = 21,182.96/x
3. Step 3: Cross multiply
   22,162.16x = 30,641.40 × 21,182.96
4. Step 4: Simplify right side
   22,162.16x = 649,075,550.54
5. Step 5: Solve for x
   x = 649,075,550.54/22,162.16
6. Step 6: Final answer
   x = 29,287.56