Finding the Fourth Proportional to 12,975.88, 17,900.50 and 12,472.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,975.88 : 17,900.50 = 12,472.92 : x
2. Step 2: Convert to fraction form
   12,975.88/17,900.50 = 12,472.92/x
3. Step 3: Cross multiply
   12,975.88x = 17,900.50 × 12,472.92
4. Step 4: Simplify right side
   12,975.88x = 223,271,504.46
5. Step 5: Solve for x
   x = 223,271,504.46/12,975.88
6. Step 6: Final answer
   x = 17,206.66