Finding the Fourth Proportional to 22,158.51, 30,582 and 13,211.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,158.51 : 30,582 = 13,211.25 : x
2. Step 2: Convert to fraction form
   22,158.51/30,582 = 13,211.25/x
3. Step 3: Cross multiply
   22,158.51x = 30,582 × 13,211.25
4. Step 4: Simplify right side
   22,158.51x = 404,026,447.50
5. Step 5: Solve for x
   x = 404,026,447.50/22,158.51
6. Step 6: Final answer
   x = 18,233.47