Finding the Fourth Proportional to 39,881.59, 55,037.25 and 21,976.34

Step by Step Solution

1. Step 1: Write the proportion equation
   39,881.59 : 55,037.25 = 21,976.34 : x
2. Step 2: Convert to fraction form
   39,881.59/55,037.25 = 21,976.34/x
3. Step 3: Cross multiply
   39,881.59x = 55,037.25 × 21,976.34
4. Step 4: Simplify right side
   39,881.59x = 1,209,517,043.48
5. Step 5: Solve for x
   x = 1,209,517,043.48/39,881.59
6. Step 6: Final answer
   x = 30,327.71