Finding the Fourth Proportional to 20,055.68, 30,055.92 and 17,078.72

Step by Step Solution

1. Step 1: Write the proportion equation
   20,055.68 : 30,055.92 = 17,078.72 : x
2. Step 2: Convert to fraction form
   20,055.68/30,055.92 = 17,078.72/x
3. Step 3: Cross multiply
   20,055.68x = 30,055.92 × 17,078.72
4. Step 4: Simplify right side
   20,055.68x = 513,316,642.02
5. Step 5: Solve for x
   x = 513,316,642.02/20,055.68
6. Step 6: Final answer
   x = 25,594.58