Finding the Fourth Proportional to 13,891.17, 19,168.61 and 7,841.08

Step by Step Solution

1. Step 1: Write the proportion equation
   13,891.17 : 19,168.61 = 7,841.08 : x
2. Step 2: Convert to fraction form
   13,891.17/19,168.61 = 7,841.08/x
3. Step 3: Cross multiply
   13,891.17x = 19,168.61 × 7,841.08
4. Step 4: Simplify right side
   13,891.17x = 150,302,517.37
5. Step 5: Solve for x
   x = 150,302,517.37/13,891.17
6. Step 6: Final answer
   x = 10,820.00