Finding the Fourth Proportional to 6,436.77, 8,880.67 and 3,603.73

Step by Step Solution

1. Step 1: Write the proportion equation
   6,436.77 : 8,880.67 = 3,603.73 : x
2. Step 2: Convert to fraction form
   6,436.77/8,880.67 = 3,603.73/x
3. Step 3: Cross multiply
   6,436.77x = 8,880.67 × 3,603.73
4. Step 4: Simplify right side
   6,436.77x = 32,003,536.90
5. Step 5: Solve for x
   x = 32,003,536.90/6,436.77
6. Step 6: Final answer
   x = 4,971.99