Finding the Fourth Proportional to 11,841.67, 16,339.71 and 7,868.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,841.67 : 16,339.71 = 7,868.62 : x
2. Step 2: Convert to fraction form
   11,841.67/16,339.71 = 7,868.62/x
3. Step 3: Cross multiply
   11,841.67x = 16,339.71 × 7,868.62
4. Step 4: Simplify right side
   11,841.67x = 128,570,968.90
5. Step 5: Solve for x
   x = 128,570,968.90/11,841.67
6. Step 6: Final answer
   x = 10,857.50