Finding the Fourth Proportional to 10,071.42, 13,891.59 and 6,290.46

Step by Step Solution

1. Step 1: Write the proportion equation
   10,071.42 : 13,891.59 = 6,290.46 : x
2. Step 2: Convert to fraction form
   10,071.42/13,891.59 = 6,290.46/x
3. Step 3: Cross multiply
   10,071.42x = 13,891.59 × 6,290.46
4. Step 4: Simplify right side
   10,071.42x = 87,384,491.23
5. Step 5: Solve for x
   x = 87,384,491.23/10,071.42
6. Step 6: Final answer
   x = 8,676.48