Finding the Fourth Proportional to 16,526.50, 24,750.87 and 12,638.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,526.50 : 24,750.87 = 12,638.50 : x
2. Step 2: Convert to fraction form
   16,526.50/24,750.87 = 12,638.50/x
3. Step 3: Cross multiply
   16,526.50x = 24,750.87 × 12,638.50
4. Step 4: Simplify right side
   16,526.50x = 312,813,870.50
5. Step 5: Solve for x
   x = 312,813,870.50/16,526.50
6. Step 6: Final answer
   x = 18,928.02