Finding the Fourth Proportional to 12,641.32, 18,965.76 and 3,756.95

Step by Step Solution

1. Step 1: Write the proportion equation
   12,641.32 : 18,965.76 = 3,756.95 : x
2. Step 2: Convert to fraction form
   12,641.32/18,965.76 = 3,756.95/x
3. Step 3: Cross multiply
   12,641.32x = 18,965.76 × 3,756.95
4. Step 4: Simplify right side
   12,641.32x = 71,253,379.52
5. Step 5: Solve for x
   x = 71,253,379.52/12,641.32
6. Step 6: Final answer
   x = 5,636.54