Finding the Fourth Proportional to 31,284.10, 43,172.94 and 19,019.49

Step by Step Solution

1. Step 1: Write the proportion equation
   31,284.10 : 43,172.94 = 19,019.49 : x
2. Step 2: Convert to fraction form
   31,284.10/43,172.94 = 19,019.49/x
3. Step 3: Cross multiply
   31,284.10x = 43,172.94 × 19,019.49
4. Step 4: Simplify right side
   31,284.10x = 821,127,300.60
5. Step 5: Solve for x
   x = 821,127,300.60/31,284.10
6. Step 6: Final answer
   x = 26,247.43