Finding the Fourth Proportional to 6,601.88, 9,111.42 and 3,808.28

Step by Step Solution

1. Step 1: Write the proportion equation
   6,601.88 : 9,111.42 = 3,808.28 : x
2. Step 2: Convert to fraction form
   6,601.88/9,111.42 = 3,808.28/x
3. Step 3: Cross multiply
   6,601.88x = 9,111.42 × 3,808.28
4. Step 4: Simplify right side
   6,601.88x = 34,698,838.56
5. Step 5: Solve for x
   x = 34,698,838.56/6,601.88
6. Step 6: Final answer
   x = 5,255.90