Finding the Fourth Proportional to 5,648.86, 7,795.89 and 3,131.76

Step by Step Solution

1. Step 1: Write the proportion equation
   5,648.86 : 7,795.89 = 3,131.76 : x
2. Step 2: Convert to fraction form
   5,648.86/7,795.89 = 3,131.76/x
3. Step 3: Cross multiply
   5,648.86x = 7,795.89 × 3,131.76
4. Step 4: Simplify right side
   5,648.86x = 24,414,845.76
5. Step 5: Solve for x
   x = 24,414,845.76/5,648.86
6. Step 6: Final answer
   x = 4,322.09