Finding the Fourth Proportional to 12,647.16, 18,956.52 and 4,742.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,647.16 : 18,956.52 = 4,742.01 : x
2. Step 2: Convert to fraction form
   12,647.16/18,956.52 = 4,742.01/x
3. Step 3: Cross multiply
   12,647.16x = 18,956.52 × 4,742.01
4. Step 4: Simplify right side
   12,647.16x = 89,892,007.41
5. Step 5: Solve for x
   x = 89,892,007.41/12,647.16
6. Step 6: Final answer
   x = 7,107.68