Finding the Fourth Proportional to 16,692.84, 23,036.76 and 9,138.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,692.84 : 23,036.76 = 9,138.69 : x
2. Step 2: Convert to fraction form
   16,692.84/23,036.76 = 9,138.69/x
3. Step 3: Cross multiply
   16,692.84x = 23,036.76 × 9,138.69
4. Step 4: Simplify right side
   16,692.84x = 210,525,808.24
5. Step 5: Solve for x
   x = 210,525,808.24/16,692.84
6. Step 6: Final answer
   x = 12,611.74