Finding the Fourth Proportional to 12,453.58, 18,682.18 and 3,687.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,453.58 : 18,682.18 = 3,687.34 : x
2. Step 2: Convert to fraction form
   12,453.58/18,682.18 = 3,687.34/x
3. Step 3: Cross multiply
   12,453.58x = 18,682.18 × 3,687.34
4. Step 4: Simplify right side
   12,453.58x = 68,887,549.60
5. Step 5: Solve for x
   x = 68,887,549.60/12,453.58
6. Step 6: Final answer
   x = 5,531.55