Finding the Fourth Proportional to 5,456.63, 8,185.28 and 1,561.34

Step by Step Solution

1. Step 1: Write the proportion equation
   5,456.63 : 8,185.28 = 1,561.34 : x
2. Step 2: Convert to fraction form
   5,456.63/8,185.28 = 1,561.34/x
3. Step 3: Cross multiply
   5,456.63x = 8,185.28 × 1,561.34
4. Step 4: Simplify right side
   5,456.63x = 12,779,956.34
5. Step 5: Solve for x
   x = 12,779,956.34/5,456.63
6. Step 6: Final answer
   x = 2,342.10