Finding the Fourth Proportional to 10,591.86, 15,887.90 and 3,196.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,591.86 : 15,887.90 = 3,196.38 : x
2. Step 2: Convert to fraction form
   10,591.86/15,887.90 = 3,196.38/x
3. Step 3: Cross multiply
   10,591.86x = 15,887.90 × 3,196.38
4. Step 4: Simplify right side
   10,591.86x = 50,783,749.82
5. Step 5: Solve for x
   x = 50,783,749.82/10,591.86
6. Step 6: Final answer
   x = 4,794.60