Finding the Fourth Proportional to 22,091.50, 30,486.27 and 12,155.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,091.50 : 30,486.27 = 12,155.50 : x
2. Step 2: Convert to fraction form
   22,091.50/30,486.27 = 12,155.50/x
3. Step 3: Cross multiply
   22,091.50x = 30,486.27 × 12,155.50
4. Step 4: Simplify right side
   22,091.50x = 370,575,854.99
5. Step 5: Solve for x
   x = 370,575,854.99/22,091.50
6. Step 6: Final answer
   x = 16,774.59