Finding the Fourth Proportional to 6,403.77, 8,837.69 and 3,572.06

Step by Step Solution

1. Step 1: Write the proportion equation
   6,403.77 : 8,837.69 = 3,572.06 : x
2. Step 2: Convert to fraction form
   6,403.77/8,837.69 = 3,572.06/x
3. Step 3: Cross multiply
   6,403.77x = 8,837.69 × 3,572.06
4. Step 4: Simplify right side
   6,403.77x = 31,568,696.89
5. Step 5: Solve for x
   x = 31,568,696.89/6,403.77
6. Step 6: Final answer
   x = 4,929.70