Finding the Fourth Proportional to 32,856.59, 49,284.81 and 13,139.75

Step by Step Solution

1. Step 1: Write the proportion equation
   32,856.59 : 49,284.81 = 13,139.75 : x
2. Step 2: Convert to fraction form
   32,856.59/49,284.81 = 13,139.75/x
3. Step 3: Cross multiply
   32,856.59x = 49,284.81 × 13,139.75
4. Step 4: Simplify right side
   32,856.59x = 647,589,835.77
5. Step 5: Solve for x
   x = 647,589,835.77/32,856.59
6. Step 6: Final answer
   x = 19,709.59