Finding the Fourth Proportional to 5,635.28, 8,411.86 and 5,173.04

Step by Step Solution

1. Step 1: Write the proportion equation
   5,635.28 : 8,411.86 = 5,173.04 : x
2. Step 2: Convert to fraction form
   5,635.28/8,411.86 = 5,173.04/x
3. Step 3: Cross multiply
   5,635.28x = 8,411.86 × 5,173.04
4. Step 4: Simplify right side
   5,635.28x = 43,514,888.25
5. Step 5: Solve for x
   x = 43,514,888.25/5,635.28
6. Step 6: Final answer
   x = 7,721.87