Finding the Fourth Proportional to 6,773.78, 9,347.60 and 3,789.86

Step by Step Solution

1. Step 1: Write the proportion equation
   6,773.78 : 9,347.60 = 3,789.86 : x
2. Step 2: Convert to fraction form
   6,773.78/9,347.60 = 3,789.86/x
3. Step 3: Cross multiply
   6,773.78x = 9,347.60 × 3,789.86
4. Step 4: Simplify right side
   6,773.78x = 35,426,095.34
5. Step 5: Solve for x
   x = 35,426,095.34/6,773.78
6. Step 6: Final answer
   x = 5,229.89