Finding the Fourth Proportional to 7,841.34, 11,756.34 and 3,891.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,841.34 : 11,756.34 = 3,891.78 : x
2. Step 2: Convert to fraction form
   7,841.34/11,756.34 = 3,891.78/x
3. Step 3: Cross multiply
   7,841.34x = 11,756.34 × 3,891.78
4. Step 4: Simplify right side
   7,841.34x = 45,753,088.89
5. Step 5: Solve for x
   x = 45,753,088.89/7,841.34
6. Step 6: Final answer
   x = 5,834.86