Finding the Fourth Proportional to 12,972.34, 17,904.27 and 10,340.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,972.34 : 17,904.27 = 10,340.38 : x
2. Step 2: Convert to fraction form
   12,972.34/17,904.27 = 10,340.38/x
3. Step 3: Cross multiply
   12,972.34x = 17,904.27 × 10,340.38
4. Step 4: Simplify right side
   12,972.34x = 185,136,955.42
5. Step 5: Solve for x
   x = 185,136,955.42/12,972.34
6. Step 6: Final answer
   x = 14,271.67