Finding the Fourth Proportional to 22,950, 31,666.12 and 13,515.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,950 : 31,666.12 = 13,515.12 : x
2. Step 2: Convert to fraction form
   22,950/31,666.12 = 13,515.12/x
3. Step 3: Cross multiply
   22,950x = 31,666.12 × 13,515.12
4. Step 4: Simplify right side
   22,950x = 427,971,411.73
5. Step 5: Solve for x
   x = 427,971,411.73/22,950
6. Step 6: Final answer
   x = 18,647.99