Finding the Fourth Proportional to 12,912.12, 17,818.38 and 7,323

Step by Step Solution

1. Step 1: Write the proportion equation
   12,912.12 : 17,818.38 = 7,323 : x
2. Step 2: Convert to fraction form
   12,912.12/17,818.38 = 7,323/x
3. Step 3: Cross multiply
   12,912.12x = 17,818.38 × 7,323
4. Step 4: Simplify right side
   12,912.12x = 130,483,996.74
5. Step 5: Solve for x
   x = 130,483,996.74/12,912.12
6. Step 6: Final answer
   x = 10,105.54