Finding the Fourth Proportional to 13,274.55, 18,315.94 and 7,682.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,274.55 : 18,315.94 = 7,682.31 : x
2. Step 2: Convert to fraction form
   13,274.55/18,315.94 = 7,682.31/x
3. Step 3: Cross multiply
   13,274.55x = 18,315.94 × 7,682.31
4. Step 4: Simplify right side
   13,274.55x = 140,708,774.81
5. Step 5: Solve for x
   x = 140,708,774.81/13,274.55
6. Step 6: Final answer
   x = 10,599.89