Finding the Fourth Proportional to 39,780.72, 59,666.22 and 16,404.12

Step by Step Solution

1. Step 1: Write the proportion equation
   39,780.72 : 59,666.22 = 16,404.12 : x
2. Step 2: Convert to fraction form
   39,780.72/59,666.22 = 16,404.12/x
3. Step 3: Cross multiply
   39,780.72x = 59,666.22 × 16,404.12
4. Step 4: Simplify right side
   39,780.72x = 978,771,832.83
5. Step 5: Solve for x
   x = 978,771,832.83/39,780.72
6. Step 6: Final answer
   x = 24,604.18