Finding the Fourth Proportional to 39,900.14, 55,059.72 and 21,994.22

Step by Step Solution

1. Step 1: Write the proportion equation
   39,900.14 : 55,059.72 = 21,994.22 : x
2. Step 2: Convert to fraction form
   39,900.14/55,059.72 = 21,994.22/x
3. Step 3: Cross multiply
   39,900.14x = 55,059.72 × 21,994.22
4. Step 4: Simplify right side
   39,900.14x = 1,210,995,594.82
5. Step 5: Solve for x
   x = 1,210,995,594.82/39,900.14
6. Step 6: Final answer
   x = 30,350.66