Finding the Fourth Proportional to 16,913.76, 23,351.59 and 10,866.45

Step by Step Solution

1. Step 1: Write the proportion equation
   16,913.76 : 23,351.59 = 10,866.45 : x
2. Step 2: Convert to fraction form
   16,913.76/23,351.59 = 10,866.45/x
3. Step 3: Cross multiply
   16,913.76x = 23,351.59 × 10,866.45
4. Step 4: Simplify right side
   16,913.76x = 253,748,986.31
5. Step 5: Solve for x
   x = 253,748,986.31/16,913.76
6. Step 6: Final answer
   x = 15,002.52