Finding the Fourth Proportional to 23,528.61, 32,469.12 and 12,918.15

Step by Step Solution

1. Step 1: Write the proportion equation
   23,528.61 : 32,469.12 = 12,918.15 : x
2. Step 2: Convert to fraction form
   23,528.61/32,469.12 = 12,918.15/x
3. Step 3: Cross multiply
   23,528.61x = 32,469.12 × 12,918.15
4. Step 4: Simplify right side
   23,528.61x = 419,440,962.53
5. Step 5: Solve for x
   x = 419,440,962.53/23,528.61
6. Step 6: Final answer
   x = 17,826.85