Finding the Fourth Proportional to 22,478.81, 31,032.42 and 16,422.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,478.81 : 31,032.42 = 16,422.25 : x
2. Step 2: Convert to fraction form
   22,478.81/31,032.42 = 16,422.25/x
3. Step 3: Cross multiply
   22,478.81x = 31,032.42 × 16,422.25
4. Step 4: Simplify right side
   22,478.81x = 509,622,159.35
5. Step 5: Solve for x
   x = 509,622,159.35/22,478.81
6. Step 6: Final answer
   x = 22,671.23