Finding the Fourth Proportional to 55,137.82, 82,707.29 and 21,858.16

Step by Step Solution

1. Step 1: Write the proportion equation
   55,137.82 : 82,707.29 = 21,858.16 : x
2. Step 2: Convert to fraction form
   55,137.82/82,707.29 = 21,858.16/x
3. Step 3: Cross multiply
   55,137.82x = 82,707.29 × 21,858.16
4. Step 4: Simplify right side
   55,137.82x = 1,807,829,477.43
5. Step 5: Solve for x
   x = 1,807,829,477.43/55,137.82
6. Step 6: Final answer
   x = 32,787.47