Finding the Fourth Proportional to 22,886.50, 31,583.86 and 12,950.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,886.50 : 31,583.86 = 12,950.50 : x
2. Step 2: Convert to fraction form
   22,886.50/31,583.86 = 12,950.50/x
3. Step 3: Cross multiply
   22,886.50x = 31,583.86 × 12,950.50
4. Step 4: Simplify right side
   22,886.50x = 409,026,778.93
5. Step 5: Solve for x
   x = 409,026,778.93/22,886.50
6. Step 6: Final answer
   x = 17,871.97