Finding the Fourth Proportional to 6,400.19, 8,830.71 and 3,605.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,400.19 : 8,830.71 = 3,605.69 : x
2. Step 2: Convert to fraction form
   6,400.19/8,830.71 = 3,605.69/x
3. Step 3: Cross multiply
   6,400.19x = 8,830.71 × 3,605.69
4. Step 4: Simplify right side
   6,400.19x = 31,840,758.59
5. Step 5: Solve for x
   x = 31,840,758.59/6,400.19
6. Step 6: Final answer
   x = 4,974.97