Finding the Fourth Proportional to 25,428.18, 35,078.42 and 22,066.28

Step by Step Solution

1. Step 1: Write the proportion equation
   25,428.18 : 35,078.42 = 22,066.28 : x
2. Step 2: Convert to fraction form
   25,428.18/35,078.42 = 22,066.28/x
3. Step 3: Cross multiply
   25,428.18x = 35,078.42 × 22,066.28
4. Step 4: Simplify right side
   25,428.18x = 774,050,117.45
5. Step 5: Solve for x
   x = 774,050,117.45/25,428.18
6. Step 6: Final answer
   x = 30,440.64