Finding the Fourth Proportional to 6,978.42, 9,630.81 and 3,835.17

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978.42 : 9,630.81 = 3,835.17 : x
2. Step 2: Convert to fraction form
   6,978.42/9,630.81 = 3,835.17/x
3. Step 3: Cross multiply
   6,978.42x = 9,630.81 × 3,835.17
4. Step 4: Simplify right side
   6,978.42x = 36,935,793.59
5. Step 5: Solve for x
   x = 36,935,793.59/6,978.42
6. Step 6: Final answer
   x = 5,292.86