Finding the Fourth Proportional to 9,510.87, 14,268.78 and 3,665.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,510.87 : 14,268.78 = 3,665.55 : x
2. Step 2: Convert to fraction form
   9,510.87/14,268.78 = 3,665.55/x
3. Step 3: Cross multiply
   9,510.87x = 14,268.78 × 3,665.55
4. Step 4: Simplify right side
   9,510.87x = 52,302,926.53
5. Step 5: Solve for x
   x = 52,302,926.53/9,510.87
6. Step 6: Final answer
   x = 5,499.28