Finding the Fourth Proportional to 11,815.25, 17,725.71 and 3,381.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,815.25 : 17,725.71 = 3,381.88 : x
2. Step 2: Convert to fraction form
   11,815.25/17,725.71 = 3,381.88/x
3. Step 3: Cross multiply
   11,815.25x = 17,725.71 × 3,381.88
4. Step 4: Simplify right side
   11,815.25x = 59,946,166.37
5. Step 5: Solve for x
   x = 59,946,166.37/11,815.25
6. Step 6: Final answer
   x = 5,073.63