Finding the Fourth Proportional to 12,238.56, 18,347.04 and 4,839.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,238.56 : 18,347.04 = 4,839.12 : x
2. Step 2: Convert to fraction form
   12,238.56/18,347.04 = 4,839.12/x
3. Step 3: Cross multiply
   12,238.56x = 18,347.04 × 4,839.12
4. Step 4: Simplify right side
   12,238.56x = 88,783,528.20
5. Step 5: Solve for x
   x = 88,783,528.20/12,238.56
6. Step 6: Final answer
   x = 7,254.41