Finding the Fourth Proportional to 11,382.34, 17,072.98 and 3,988.47

Step by Step Solution

1. Step 1: Write the proportion equation
   11,382.34 : 17,072.98 = 3,988.47 : x
2. Step 2: Convert to fraction form
   11,382.34/17,072.98 = 3,988.47/x
3. Step 3: Cross multiply
   11,382.34x = 17,072.98 × 3,988.47
4. Step 4: Simplify right side
   11,382.34x = 68,095,068.54
5. Step 5: Solve for x
   x = 68,095,068.54/11,382.34
6. Step 6: Final answer
   x = 5,982.52