Finding the Fourth Proportional to 23,870.52, 32,940.20 and 13,260.80

Step by Step Solution

1. Step 1: Write the proportion equation
   23,870.52 : 32,940.20 = 13,260.80 : x
2. Step 2: Convert to fraction form
   23,870.52/32,940.20 = 13,260.80/x
3. Step 3: Cross multiply
   23,870.52x = 32,940.20 × 13,260.80
4. Step 4: Simplify right side
   23,870.52x = 436,813,404.16
5. Step 5: Solve for x
   x = 436,813,404.16/23,870.52
6. Step 6: Final answer
   x = 18,299.28