Finding the Fourth Proportional to 13,274.49, 18,315.86 and 7,682.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,274.49 : 18,315.86 = 7,682.25 : x
2. Step 2: Convert to fraction form
   13,274.49/18,315.86 = 7,682.25/x
3. Step 3: Cross multiply
   13,274.49x = 18,315.86 × 7,682.25
4. Step 4: Simplify right side
   13,274.49x = 140,706,977.07
5. Step 5: Solve for x
   x = 140,706,977.07/13,274.49
6. Step 6: Final answer
   x = 10,599.80