Finding the Fourth Proportional to 39,900.51, 55,062.69 and 21,995.82

Step by Step Solution

1. Step 1: Write the proportion equation
   39,900.51 : 55,062.69 = 21,995.82 : x
2. Step 2: Convert to fraction form
   39,900.51/55,062.69 = 21,995.82/x
3. Step 3: Cross multiply
   39,900.51x = 55,062.69 × 21,995.82
4. Step 4: Simplify right side
   39,900.51x = 1,211,149,017.96
5. Step 5: Solve for x
   x = 1,211,149,017.96/39,900.51
6. Step 6: Final answer
   x = 30,354.22