Finding the Fourth Proportional to 12,603.56, 18,899.24 and 3,836.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,603.56 : 18,899.24 = 3,836.12 : x
2. Step 2: Convert to fraction form
   12,603.56/18,899.24 = 3,836.12/x
3. Step 3: Cross multiply
   12,603.56x = 18,899.24 × 3,836.12
4. Step 4: Simplify right side
   12,603.56x = 72,499,752.55
5. Step 5: Solve for x
   x = 72,499,752.55/12,603.56
6. Step 6: Final answer
   x = 5,752.32