Finding the Fourth Proportional to 39,928.74, 59,896.71 and 10,346.46

Step by Step Solution

1. Step 1: Write the proportion equation
   39,928.74 : 59,896.71 = 10,346.46 : x
2. Step 2: Convert to fraction form
   39,928.74/59,896.71 = 10,346.46/x
3. Step 3: Cross multiply
   39,928.74x = 59,896.71 × 10,346.46
4. Step 4: Simplify right side
   39,928.74x = 619,718,914.15
5. Step 5: Solve for x
   x = 619,718,914.15/39,928.74
6. Step 6: Final answer
   x = 15,520.62