Finding the Fourth Proportional to 23,019.36, 31,769.42 and 12,948.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,019.36 : 31,769.42 = 12,948.18 : x
2. Step 2: Convert to fraction form
   23,019.36/31,769.42 = 12,948.18/x
3. Step 3: Cross multiply
   23,019.36x = 31,769.42 × 12,948.18
4. Step 4: Simplify right side
   23,019.36x = 411,356,168.66
5. Step 5: Solve for x
   x = 411,356,168.66/23,019.36
6. Step 6: Final answer
   x = 17,870.01