Finding the Fourth Proportional to 22,109.76, 30,511.89 and 13,158.45

Step by Step Solution

1. Step 1: Write the proportion equation
   22,109.76 : 30,511.89 = 13,158.45 : x
2. Step 2: Convert to fraction form
   22,109.76/30,511.89 = 13,158.45/x
3. Step 3: Cross multiply
   22,109.76x = 30,511.89 × 13,158.45
4. Step 4: Simplify right side
   22,109.76x = 401,489,178.97
5. Step 5: Solve for x
   x = 401,489,178.97/22,109.76
6. Step 6: Final answer
   x = 18,158.91