Finding the Fourth Proportional to 13,151.83, 18,154.65 and 8,900.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,151.83 : 18,154.65 = 8,900.82 : x
2. Step 2: Convert to fraction form
   13,151.83/18,154.65 = 8,900.82/x
3. Step 3: Cross multiply
   13,151.83x = 18,154.65 × 8,900.82
4. Step 4: Simplify right side
   13,151.83x = 161,591,271.81
5. Step 5: Solve for x
   x = 161,591,271.81/13,151.83
6. Step 6: Final answer
   x = 12,286.60