Finding the Fourth Proportional to 10,581.36, 15,855.60 and 4,003.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,581.36 : 15,855.60 = 4,003.98 : x
2. Step 2: Convert to fraction form
   10,581.36/15,855.60 = 4,003.98/x
3. Step 3: Cross multiply
   10,581.36x = 15,855.60 × 4,003.98
4. Step 4: Simplify right side
   10,581.36x = 63,485,505.29
5. Step 5: Solve for x
   x = 63,485,505.29/10,581.36
6. Step 6: Final answer
   x = 5,999.75