Finding the Fourth Proportional to 16,911, 23,332.52 and 10,538.63

Step by Step Solution

1. Step 1: Write the proportion equation
   16,911 : 23,332.52 = 10,538.63 : x
2. Step 2: Convert to fraction form
   16,911/23,332.52 = 10,538.63/x
3. Step 3: Cross multiply
   16,911x = 23,332.52 × 10,538.63
4. Step 4: Simplify right side
   16,911x = 245,892,678.59
5. Step 5: Solve for x
   x = 245,892,678.59/16,911
6. Step 6: Final answer
   x = 14,540.40