Finding the Fourth Proportional to 8,555.82, 11,802.96 and 5,570.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,555.82 : 11,802.96 = 5,570.55 : x
2. Step 2: Convert to fraction form
   8,555.82/11,802.96 = 5,570.55/x
3. Step 3: Cross multiply
   8,555.82x = 11,802.96 × 5,570.55
4. Step 4: Simplify right side
   8,555.82x = 65,748,978.83
5. Step 5: Solve for x
   x = 65,748,978.83/8,555.82
6. Step 6: Final answer
   x = 7,684.71