Finding the Fourth Proportional to 23,529.20, 32,468.18 and 12,918.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,529.20 : 32,468.18 = 12,918.60 : x
2. Step 2: Convert to fraction form
   23,529.20/32,468.18 = 12,918.60/x
3. Step 3: Cross multiply
   23,529.20x = 32,468.18 × 12,918.60
4. Step 4: Simplify right side
   23,529.20x = 419,443,365.56
5. Step 5: Solve for x
   x = 419,443,365.56/23,529.20
6. Step 6: Final answer
   x = 17,826.51