Finding the Fourth Proportional to 39,900.27, 55,059.89 and 21,994.35

Step by Step Solution

1. Step 1: Write the proportion equation
   39,900.27 : 55,059.89 = 21,994.35 : x
2. Step 2: Convert to fraction form
   39,900.27/55,059.89 = 21,994.35/x
3. Step 3: Cross multiply
   39,900.27x = 55,059.89 × 21,994.35
4. Step 4: Simplify right side
   39,900.27x = 1,211,006,491.62
5. Step 5: Solve for x
   x = 1,211,006,491.62/39,900.27
6. Step 6: Final answer
   x = 30,350.83