Finding the Fourth Proportional to 22,171.42, 33,127.22 and 21,396.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,171.42 : 33,127.22 = 21,396.25 : x
2. Step 2: Convert to fraction form
   22,171.42/33,127.22 = 21,396.25/x
3. Step 3: Cross multiply
   22,171.42x = 33,127.22 × 21,396.25
4. Step 4: Simplify right side
   22,171.42x = 708,798,280.93
5. Step 5: Solve for x
   x = 708,798,280.93/22,171.42
6. Step 6: Final answer
   x = 31,969.01