Finding the Fourth Proportional to 16,131.88, 24,179.34 and 8,719.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,131.88 : 24,179.34 = 8,719.72 : x
2. Step 2: Convert to fraction form
   16,131.88/24,179.34 = 8,719.72/x
3. Step 3: Cross multiply
   16,131.88x = 24,179.34 × 8,719.72
4. Step 4: Simplify right side
   16,131.88x = 210,837,074.58
5. Step 5: Solve for x
   x = 210,837,074.58/16,131.88
6. Step 6: Final answer
   x = 13,069.59