Finding the Fourth Proportional to 15,131.59, 22,692.77 and 12,162.99

Step by Step Solution

1. Step 1: Write the proportion equation
   15,131.59 : 22,692.77 = 12,162.99 : x
2. Step 2: Convert to fraction form
   15,131.59/22,692.77 = 12,162.99/x
3. Step 3: Cross multiply
   15,131.59x = 22,692.77 × 12,162.99
4. Step 4: Simplify right side
   15,131.59x = 276,012,072.89
5. Step 5: Solve for x
   x = 276,012,072.89/15,131.59
6. Step 6: Final answer
   x = 18,240.78