Finding the Fourth Proportional to 12,735.32, 19,099.73 and 3,965.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,735.32 : 19,099.73 = 3,965.72 : x
2. Step 2: Convert to fraction form
   12,735.32/19,099.73 = 3,965.72/x
3. Step 3: Cross multiply
   12,735.32x = 19,099.73 × 3,965.72
4. Step 4: Simplify right side
   12,735.32x = 75,744,095.67
5. Step 5: Solve for x
   x = 75,744,095.67/12,735.32
6. Step 6: Final answer
   x = 5,947.56