Finding the Fourth Proportional to 18,429.60, 25,443.36 and 12,152.88

Step by Step Solution

1. Step 1: Write the proportion equation
   18,429.60 : 25,443.36 = 12,152.88 : x
2. Step 2: Convert to fraction form
   18,429.60/25,443.36 = 12,152.88/x
3. Step 3: Cross multiply
   18,429.60x = 25,443.36 × 12,152.88
4. Step 4: Simplify right side
   18,429.60x = 309,210,100.88
5. Step 5: Solve for x
   x = 309,210,100.88/18,429.60
6. Step 6: Final answer
   x = 16,777.91