Finding the Fourth Proportional to 39,882.09, 55,037.30 and 21,732.69

Step by Step Solution

1. Step 1: Write the proportion equation
   39,882.09 : 55,037.30 = 21,732.69 : x
2. Step 2: Convert to fraction form
   39,882.09/55,037.30 = 21,732.69/x
3. Step 3: Cross multiply
   39,882.09x = 55,037.30 × 21,732.69
4. Step 4: Simplify right side
   39,882.09x = 1,196,108,579.34
5. Step 5: Solve for x
   x = 1,196,108,579.34/39,882.09
6. Step 6: Final answer
   x = 29,991.12