Finding the Fourth Proportional to 23,379.86, 32,256.21 and 13,305.78

Step by Step Solution

1. Step 1: Write the proportion equation
   23,379.86 : 32,256.21 = 13,305.78 : x
2. Step 2: Convert to fraction form
   23,379.86/32,256.21 = 13,305.78/x
3. Step 3: Cross multiply
   23,379.86x = 32,256.21 × 13,305.78
4. Step 4: Simplify right side
   23,379.86x = 429,193,962.83
5. Step 5: Solve for x
   x = 429,193,962.83/23,379.86
6. Step 6: Final answer
   x = 18,357.42