Finding the Fourth Proportional to 16,185.60, 22,338.72 and 15,131.52

Step by Step Solution

1. Step 1: Write the proportion equation
   16,185.60 : 22,338.72 = 15,131.52 : x
2. Step 2: Convert to fraction form
   16,185.60/22,338.72 = 15,131.52/x
3. Step 3: Cross multiply
   16,185.60x = 22,338.72 × 15,131.52
4. Step 4: Simplify right side
   16,185.60x = 338,018,788.45
5. Step 5: Solve for x
   x = 338,018,788.45/16,185.60
6. Step 6: Final answer
   x = 20,883.92