Finding the Fourth Proportional to 39,628.55, 59,405.61 and 13,314.89

Step by Step Solution

1. Step 1: Write the proportion equation
   39,628.55 : 59,405.61 = 13,314.89 : x
2. Step 2: Convert to fraction form
   39,628.55/59,405.61 = 13,314.89/x
3. Step 3: Cross multiply
   39,628.55x = 59,405.61 × 13,314.89
4. Step 4: Simplify right side
   39,628.55x = 790,978,815.57
5. Step 5: Solve for x
   x = 790,978,815.57/39,628.55
6. Step 6: Final answer
   x = 19,959.82