Finding the Fourth Proportional to 23,082.84, 31,854 and 13,012.20

Step by Step Solution

1. Step 1: Write the proportion equation
   23,082.84 : 31,854 = 13,012.20 : x
2. Step 2: Convert to fraction form
   23,082.84/31,854 = 13,012.20/x
3. Step 3: Cross multiply
   23,082.84x = 31,854 × 13,012.20
4. Step 4: Simplify right side
   23,082.84x = 414,490,618.80
5. Step 5: Solve for x
   x = 414,490,618.80/23,082.84
6. Step 6: Final answer
   x = 17,956.66