Finding the Fourth Proportional to 16,815.50, 23,180.50 and 10,764.87

Step by Step Solution

1. Step 1: Write the proportion equation
   16,815.50 : 23,180.50 = 10,764.87 : x
2. Step 2: Convert to fraction form
   16,815.50/23,180.50 = 10,764.87/x
3. Step 3: Cross multiply
   16,815.50x = 23,180.50 × 10,764.87
4. Step 4: Simplify right side
   16,815.50x = 249,535,069.04
5. Step 5: Solve for x
   x = 249,535,069.04/16,815.50
6. Step 6: Final answer
   x = 14,839.59