Finding the Fourth Proportional to 8,890.62, 12,261.96 and 5,741.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,890.62 : 12,261.96 = 5,741.34 : x
2. Step 2: Convert to fraction form
   8,890.62/12,261.96 = 5,741.34/x
3. Step 3: Cross multiply
   8,890.62x = 12,261.96 × 5,741.34
4. Step 4: Simplify right side
   8,890.62x = 70,400,081.43
5. Step 5: Solve for x
   x = 70,400,081.43/8,890.62
6. Step 6: Final answer
   x = 7,918.47