Finding the Fourth Proportional to 25,431, 35,082.30 and 22,069.10

Step by Step Solution

1. Step 1: Write the proportion equation
   25,431 : 35,082.30 = 22,069.10 : x
2. Step 2: Convert to fraction form
   25,431/35,082.30 = 22,069.10/x
3. Step 3: Cross multiply
   25,431x = 35,082.30 × 22,069.10
4. Step 4: Simplify right side
   25,431x = 774,234,611.52
5. Step 5: Solve for x
   x = 774,234,611.52/25,431
6. Step 6: Final answer
   x = 30,444.52