Finding the Fourth Proportional to 3,840.86, 5,298.54 and 3,691.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,840.86 : 5,298.54 = 3,691.82 : x
2. Step 2: Convert to fraction form
   3,840.86/5,298.54 = 3,691.82/x
3. Step 3: Cross multiply
   3,840.86x = 5,298.54 × 3,691.82
4. Step 4: Simplify right side
   3,840.86x = 19,561,255.94
5. Step 5: Solve for x
   x = 19,561,255.94/3,840.86
6. Step 6: Final answer
   x = 5,092.94