Finding the Fourth Proportional to 55,131.82, 82,725.09 and 21,851.17

Step by Step Solution

1. Step 1: Write the proportion equation
   55,131.82 : 82,725.09 = 21,851.17 : x
2. Step 2: Convert to fraction form
   55,131.82/82,725.09 = 21,851.17/x
3. Step 3: Cross multiply
   55,131.82x = 82,725.09 × 21,851.17
4. Step 4: Simplify right side
   55,131.82x = 1,807,640,004.86
5. Step 5: Solve for x
   x = 1,807,640,004.86/55,131.82
6. Step 6: Final answer
   x = 32,787.60