Finding the Fourth Proportional to 9,236.91, 13,820.43 and 5,666.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,236.91 : 13,820.43 = 5,666.28 : x
2. Step 2: Convert to fraction form
   9,236.91/13,820.43 = 5,666.28/x
3. Step 3: Cross multiply
   9,236.91x = 13,820.43 × 5,666.28
4. Step 4: Simplify right side
   9,236.91x = 78,310,426.10
5. Step 5: Solve for x
   x = 78,310,426.10/9,236.91
6. Step 6: Final answer
   x = 8,477.99