Finding the Fourth Proportional to 23,780.65, 32,816.89 and 13,170.05

Step by Step Solution

1. Step 1: Write the proportion equation
   23,780.65 : 32,816.89 = 13,170.05 : x
2. Step 2: Convert to fraction form
   23,780.65/32,816.89 = 13,170.05/x
3. Step 3: Cross multiply
   23,780.65x = 32,816.89 × 13,170.05
4. Step 4: Simplify right side
   23,780.65x = 432,200,049.22
5. Step 5: Solve for x
   x = 432,200,049.22/23,780.65
6. Step 6: Final answer
   x = 18,174.45