Finding the Fourth Proportional to 3,835.14, 5,288.59 and 3,611.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,835.14 : 5,288.59 = 3,611.91 : x
2. Step 2: Convert to fraction form
   3,835.14/5,288.59 = 3,611.91/x
3. Step 3: Cross multiply
   3,835.14x = 5,288.59 × 3,611.91
4. Step 4: Simplify right side
   3,835.14x = 19,101,935.45
5. Step 5: Solve for x
   x = 19,101,935.45/3,835.14
6. Step 6: Final answer
   x = 4,980.77