Finding the Fourth Proportional to 16,868.81, 23,287.86 and 10,903.87

Step by Step Solution

1. Step 1: Write the proportion equation
   16,868.81 : 23,287.86 = 10,903.87 : x
2. Step 2: Convert to fraction form
   16,868.81/23,287.86 = 10,903.87/x
3. Step 3: Cross multiply
   16,868.81x = 23,287.86 × 10,903.87
4. Step 4: Simplify right side
   16,868.81x = 253,927,798.02
5. Step 5: Solve for x
   x = 253,927,798.02/16,868.81
6. Step 6: Final answer
   x = 15,053.09