Finding the Fourth Proportional to 39,900.07, 55,062.27 and 21,994.69

Step by Step Solution

1. Step 1: Write the proportion equation
   39,900.07 : 55,062.27 = 21,994.69 : x
2. Step 2: Convert to fraction form
   39,900.07/55,062.27 = 21,994.69/x
3. Step 3: Cross multiply
   39,900.07x = 55,062.27 × 21,994.69
4. Step 4: Simplify right side
   39,900.07x = 1,211,077,559.35
5. Step 5: Solve for x
   x = 1,211,077,559.35/39,900.07
6. Step 6: Final answer
   x = 30,352.77