Finding the Fourth Proportional to 39,162.65, 58,741.94 and 13,860.47

Step by Step Solution

1. Step 1: Write the proportion equation
   39,162.65 : 58,741.94 = 13,860.47 : x
2. Step 2: Convert to fraction form
   39,162.65/58,741.94 = 13,860.47/x
3. Step 3: Cross multiply
   39,162.65x = 58,741.94 × 13,860.47
4. Step 4: Simplify right side
   39,162.65x = 814,191,078.62
5. Step 5: Solve for x
   x = 814,191,078.62/39,162.65
6. Step 6: Final answer
   x = 20,789.99