Finding the Fourth Proportional to 10,326.55, 15,491.64 and 3,665.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,326.55 : 15,491.64 = 3,665.08 : x
2. Step 2: Convert to fraction form
   10,326.55/15,491.64 = 3,665.08/x
3. Step 3: Cross multiply
   10,326.55x = 15,491.64 × 3,665.08
4. Step 4: Simplify right side
   10,326.55x = 56,778,099.93
5. Step 5: Solve for x
   x = 56,778,099.93/10,326.55
6. Step 6: Final answer
   x = 5,498.27