Finding the Fourth Proportional to 12,453.12, 18,646.71 and 10,271.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,453.12 : 18,646.71 = 10,271.58 : x
2. Step 2: Convert to fraction form
   12,453.12/18,646.71 = 10,271.58/x
3. Step 3: Cross multiply
   12,453.12x = 18,646.71 × 10,271.58
4. Step 4: Simplify right side
   12,453.12x = 191,531,173.50
5. Step 5: Solve for x
   x = 191,531,173.50/12,453.12
6. Step 6: Final answer
   x = 15,380.18