Finding the Fourth Proportional to 12,398.77, 18,598.31 and 3,633.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,398.77 : 18,598.31 = 3,633.86 : x
2. Step 2: Convert to fraction form
   12,398.77/18,598.31 = 3,633.86/x
3. Step 3: Cross multiply
   12,398.77x = 18,598.31 × 3,633.86
4. Step 4: Simplify right side
   12,398.77x = 67,583,696.73
5. Step 5: Solve for x
   x = 67,583,696.73/12,398.77
6. Step 6: Final answer
   x = 5,450.84