Finding the Fourth Proportional to 13,281.82, 18,327.01 and 7,616.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,281.82 : 18,327.01 = 7,616.81 : x
2. Step 2: Convert to fraction form
   13,281.82/18,327.01 = 7,616.81/x
3. Step 3: Cross multiply
   13,281.82x = 18,327.01 × 7,616.81
4. Step 4: Simplify right side
   13,281.82x = 139,593,342.55
5. Step 5: Solve for x
   x = 139,593,342.55/13,281.82
6. Step 6: Final answer
   x = 10,510.10