Finding the Fourth Proportional to 11,251.62, 16,885.86 and 4,238.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,251.62 : 16,885.86 = 4,238.55 : x
2. Step 2: Convert to fraction form
   11,251.62/16,885.86 = 4,238.55/x
3. Step 3: Cross multiply
   11,251.62x = 16,885.86 × 4,238.55
4. Step 4: Simplify right side
   11,251.62x = 71,571,561.90
5. Step 5: Solve for x
   x = 71,571,561.90/11,251.62
6. Step 6: Final answer
   x = 6,361.00