Finding the Fourth Proportional to 39,979.83, 55,172.37 and 22,074.87

Step by Step Solution

1. Step 1: Write the proportion equation
   39,979.83 : 55,172.37 = 22,074.87 : x
2. Step 2: Convert to fraction form
   39,979.83/55,172.37 = 22,074.87/x
3. Step 3: Cross multiply
   39,979.83x = 55,172.37 × 22,074.87
4. Step 4: Simplify right side
   39,979.83x = 1,217,922,895.34
5. Step 5: Solve for x
   x = 1,217,922,895.34/39,979.83
6. Step 6: Final answer
   x = 30,463.43