Finding the Fourth Proportional to 11,903.58, 17,855.42 and 3,138.27

Step by Step Solution

1. Step 1: Write the proportion equation
   11,903.58 : 17,855.42 = 3,138.27 : x
2. Step 2: Convert to fraction form
   11,903.58/17,855.42 = 3,138.27/x
3. Step 3: Cross multiply
   11,903.58x = 17,855.42 × 3,138.27
4. Step 4: Simplify right side
   11,903.58x = 56,035,128.92
5. Step 5: Solve for x
   x = 56,035,128.92/11,903.58
6. Step 6: Final answer
   x = 4,707.42