Finding the Fourth Proportional to 6,605.74, 9,900.57 and 3,091.02

Step by Step Solution

1. Step 1: Write the proportion equation
   6,605.74 : 9,900.57 = 3,091.02 : x
2. Step 2: Convert to fraction form
   6,605.74/9,900.57 = 3,091.02/x
3. Step 3: Cross multiply
   6,605.74x = 9,900.57 × 3,091.02
4. Step 4: Simplify right side
   6,605.74x = 30,602,859.88
5. Step 5: Solve for x
   x = 30,602,859.88/6,605.74
6. Step 6: Final answer
   x = 4,632.77