Finding the Fourth Proportional to 16,404.30, 24,533.55 and 13,779.90

Step by Step Solution

1. Step 1: Write the proportion equation
   16,404.30 : 24,533.55 = 13,779.90 : x
2. Step 2: Convert to fraction form
   16,404.30/24,533.55 = 13,779.90/x
3. Step 3: Cross multiply
   16,404.30x = 24,533.55 × 13,779.90
4. Step 4: Simplify right side
   16,404.30x = 338,069,865.65
5. Step 5: Solve for x
   x = 338,069,865.65/16,404.30
6. Step 6: Final answer
   x = 20,608.61